Question

How do you solve `8- 2x = - 7`?

Answer 1

`x = 7.5 or 7 1/2`

Explanation:

To solve for the variable `x`, we have to make it by itself. To do so, first subtract `color(blue)(8)` from both sides of the equation:
`8 - 2x quadcolor(blue)(-quad8) = -7 quadcolor(blue)(-quad8)`

`-2x = -15`

Now divide both sides by `color(blue)(-2)`:
`(-2x)/color(blue)(-2) = (-15)/color(blue)(-2)`

Therefore,
`x = 7.5 or 7 1/2`

Hope this helps!