# How do you solve 5x - 5= x + 7?

Mar 2, 2018

The answer is $x = 3$.

#### Explanation:

First, you must isolate the variables by one of the $x$ to the other side(do not forget to change it to a negative if a positive or vice-versa). Then just isolate the variable by changing the numbers to one side and the variables on the other side. It should give you an equation like

$5 x - x = 5 + 7$

which equals

$4 x = 12$

then just divide both sides by $4$.

$\frac{4 x}{4} = \frac{12}{4}$

So

$x = 3$