What is x if (5x-y) = 18

X = (18 + y) / 5

Step-by-step explanation:

Ok first off you don't need parenthesis around the 5x - y.

5x - y = 18

First bring add y to both sides to isolate the x

5x = 18 + y

Divide 5 by both sides to get x alone

x = (18+y) / 5

That's your answer

y=-18+5x

Step-by-step explanation:

Move x to other side (-y=18-5x)

Distribute - 1 (y=-18+5x)