Question

5(x - 10) = 10x + 7.5x + 15

Please answer!

Answer 1

`x = - 5.2`

Explanation:

First, we expand the equation using the rule

`x(y - z) = xy - xz`

`5 * x - 5 * 10 = 10x + 7.5x + 15`

`5x - 50 = 10x + 7.5x + 15`

`5x - 50 = 17.5x + 15`

Subtract 15 from both sides:

`5x - 65 = 17.5x`

Subtract 5x from both sides:

`- 65 = 12.5x`

`12.5x = - 65`

`x = - 5.2`