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Example Questions
Example Question #251 : How To Solve One Step Equations
Solve for :
.
None of the above
In order to solve for in the above equation, we must isolate it on one side of the equation. We can do this by applying an operation to
that is the inverse (opposite) of what's currently being applied to
.
Given , we see that
is being multiplied by
, so we need to divide both sides of the equation by
to isolate
:
Example Question #251 : Linear Equations
Solve for :
In order to solve , we need to get
all by itself on one side of the equal sign. To do this, we need to subtract
from both sides of the equation:
, so
is left by itself on the left side of the equal sign, and
, leaving us with
on the right side of the equal sign:
So, our solution to this problem is .
Example Question #252 : Linear Equations
To solve a one-step equation, we first determine what is being done to the variable in the equation and then do the inverse of that. Here is being multiplied by
, so we must do the inverse: divide by
.
.
After dividing both sides by , we get:
.
Example Question #252 : How To Solve One Step Equations
Solve for :
.
In order to solve for in the above equation, we must isolate it on one side of the equation. We can do this by applying an operation to
that is the inverse (opposite) of what's currently being applied to
.
Given , we see that
is being multiplied by
, so we need to divide both sides of the equation by
to isolate
:
Example Question #251 : Linear Equations
Solve for :
.
In order to solve for in the above equation, we must isolate it on one side of the equation. We can do this by applying an operation to
that is the inverse (opposite) of what's currently being applied to
.
Given , we see that
is being multiplied by
, so we need to divide both sides of the equation by
(or multiply by
, equivalently) to isolate
:
Example Question #253 : Linear Equations
Solve for :
Because is a fraction with the variable in the numerator, we want to isolate it by multiplying both sides of our equation by the denominator.
Now we can cancel the s on the left half, and solve for the right half.
Example Question #254 : Linear Equations
Solve for :
To solve this equation by isolating the variable, subtract the term that is not the variable from both sides.
Subtract
from both sides.
Now, simplify the equation.
Example Question #255 : Linear Equations
Solve for :
is the same as
, so to isolate our variable we should divide both sides of the equation by
:
Divide both sides by
.
Now, simplify the equations. Remember that .
Example Question #256 : Linear Equations
What property of equality allows us to solve the one-step equation ?
Multiplication Property of Equality
Addition Property of Equality
Subtraction Property of Equality
Reflexive Property of Equality
Substitution Property of Equality
Subtraction Property of Equality
To isolate our variable, we must subtract from each side. We may do so without altering the value of the equation since the Subtraction Property of Equality says that if
, then
.
Example Question #257 : Linear Equations
What property of equality allows us to solve the equation for
?
Substitution Property of Equality
Subtraction Property of Equality
Addition Property of Equality
Division Property of Equality
Multiplication Property of Equality
Division Property of Equality
To solve the equation , we must isolate
by dividing both sides by
. This is permissible because of the Division Property of Equality, which states that if
, then
, where
. (That last bit is just part of a general prohibition on dividing by zero).
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