What are the solutions to the equation

Question

(5x−15)
2
=−100?

Answer 1

If your question mean:

(5 x − 15 ) / 2 = - 100

then

Multiply both sides by 2

5 x - 15 = - 200

Add 15 to both sides

5 x - 15 + 15 = - 200 + 15

5 x = - 185

Divide both sides by 5

x = - 185 / 5

x = - 37