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Example Questions
Example Question #812 : Basic Single Variable Algebra
Solve for :
Possible Answers:
Correct answer:
Explanation:
Step 1: The least common denominator of 7 and 2 is 14. Multiply each term by this LCD:
Step 2: Reduce the fractions:
Step 3: Isolate :
Remember to distribute the negative:
Example Question #821 : Basic Single Variable Algebra
Solve for and .
Possible Answers:
Correct answer:
Explanation:
Solve for x and y by using substitution. Solve the first equation for x.
Next substitute x into the second equation and simplify,
Now use the value for y to solve for x.
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