Question

Solve each of the following equations for the missing variable.

-2.5x – 10 = 40
O x = 20
O x= -20
O 50
-50

Answer 1

x = -20

Explanation:

`- 2.5x - 10 = 40`

Collect like terms and simplify

`- 2.5x = 40 + 10 \\ - 2.5x = 50`

Divide both sides of the equation by -2.5

`( - 2.5x)/( - 2.5) = (50)/( - 2.5)`

Simplify

`x = - 20`

Answer 2

The answer for -2.5x-10=40 would be:
x = - 20.