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ISEE Middle Level Math : How to find the solution to an equation

Study concepts, example questions & explanations for ISEE Middle Level Math

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All ISEE Middle Level Math Resources

6 Diagnostic Tests 303 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #311 : How To Find The Solution To An Equation

Solve for :

12z=312

Possible Answers:

Correct answer:

Explanation:

To solve, divide each side by 12:

$12z\div 12=312\div 12$

z=26

Answer:

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Example Question #312 : How To Find The Solution To An Equation

Multiply:

$y^{3}*y^{5}=$

Possible Answers:

$y^{38}$

$y^{15}$

$y^{8}$

$y^{2}$

Correct answer:

$y^{8}$

Explanation:

To solve, add the exponents and keep the base:

$y^{3}*y^{5}=y^{8}$

Answer: $y^{8}$

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Example Question #313 : How To Find The Solution To An Equation

Multiply:

$b^{25}*b^{12}=$

Possible Answers:

$b^{25}$

$b^{16}$

$b^{37}$

$b^{13}$

Correct answer:

$b^{37}$

Explanation:

To solve, add the exponents and keep the base:

$b^{25}*b^{12}=b^{37}$

Answer: $b^{37}$

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Example Question #314 : How To Find The Solution To An Equation

Seventy subtracted from one-fifth of a number is equal to ten. What is the number?

Possible Answers:

300

400

120

Correct answer:

400

Explanation:

If we let be the number, "one-fifth of a number" can be written as

$\frac{1}{5}x$

"Seventy subtracted from one-fifth of a number" can be written as

$\frac{1}{5}x - 70$

Set this equal to ten, and solve for :

$\frac{1}{5}x - 70 = 10$

$\frac{1}{5}x - 70 + 70= 10 + 70$

$\frac{1}{5}x = 80$

$5 \cdot \frac{1}{5}x =5 \cdot 80$

x = 400

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Example Question #315 : How To Find The Solution To An Equation

Solve:

$n^{13}*n^{6}=$

Possible Answers:

$n^{19}$

$n^{13}$

$n^{6}$

Correct answer:

$n^{19}$

Explanation:

To solve, add the exponents and leave the base the same:

$n^{13}*n^{6}=n^{19}$

Answer: $n^{19}$

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Example Question #316 : How To Find The Solution To An Equation

Solve:

$r^{65}*r^{30}=$

Possible Answers:

$r^{95}$

$r^{35}$

$r^{1950}$

Correct answer:

$r^{95}$

Explanation:

To solve, add the exponents and leave the base the same:

$r^{65}*r^{30}=r^{95}$

Answer: $r^{95}$

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Example Question #317 : How To Find The Solution To An Equation

Solve for m:

21m=252

Possible Answers:

231

273

Correct answer:

Explanation:

To solve, divide by 21 on each side:

$21m\div 21=252\div 21$

m=12

Answer:

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Example Question #318 : How To Find The Solution To An Equation

Solve for b:

15b=480

Possible Answers:

465

495

Correct answer:

Explanation:

To solve, divide by 15 on each side:

$15b\div 15=480\div 15$

b=32

Answer:

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Example Question #2641 : Isee Middle Level (Grades 7 8) Mathematics Achievement

Solve for .

2y=4(y-6)

Possible Answers:

Correct answer:

Explanation:

2y=4(y-6)

To solve this equation, first we apply the distributive property by multiplying 4 by each number in the parentheses.

$2y=(4\times y)-(4\times6)$

2y=4y-24

Next, subtract from each side.

-2y=-24

Finally, divide each side by .

$\frac{-2y}{-2}=\frac{-24}{-2}$

$y=\frac{-24}{-2}=12$

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Example Question #319 : How To Find The Solution To An Equation

Multiply:

$z^{20}*z^{17}=$

Possible Answers:

$z^{57}$

$z^{37}$

$z^{19}$

$z^{3}$

Correct answer:

$z^{37}$

Explanation:

To solve, add the exponents and leave the base the same:

$z^{20}*z^{17}=z^{37}$

Answer:

$z^{37}$

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All ISEE Middle Level Math Resources

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ISEE Middle Level Math : How to find the solution to an equation

Study concepts, example questions & explanations for ISEE Middle Level Math

All ISEE Middle Level Math Resources

Example Questions

Example Question #311 : How To Find The Solution To An Equation

Example Question #312 : How To Find The Solution To An Equation

Example Question #313 : How To Find The Solution To An Equation

Example Question #314 : How To Find The Solution To An Equation

Example Question #315 : How To Find The Solution To An Equation

Example Question #316 : How To Find The Solution To An Equation

Example Question #317 : How To Find The Solution To An Equation

Example Question #318 : How To Find The Solution To An Equation

Example Question #2641 : Isee Middle Level (Grades 7 8) Mathematics Achievement

Example Question #319 : How To Find The Solution To An Equation

All ISEE Middle Level Math Resources

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