Question

What is the first step needed to solve 3 over 4 the whole multiplied by x minus 3 equal negative 18?

Answer 1

(3/4)x then add 3 both sides then divide.

Answer 2

Well since you're solving for x, you need to isolate x by adding 3 to both sides to get 3 away from the x:
(3/4)x - 3 = -18
+3 +3
(3/4)x = -15