Question

Can anyone help?
If x = 3, what does y equal?
x = 3 y = ?
5x + 3y = 9

Answer 1

y = -2

Explanation:

Substituting x for 3 we get

5(3) + 3y = 9

Since both sides are divisible by three, we do that

5 + y + 3

Isolate y

y = -2

Answer 2

y = -2

Explanation:

Plug in 3 for x and you get:

15 + 3y = 9

Solve for, Subtract 15 oon both sides:

3y = -6

Divide by 3 on both sides:

y = -2