Question

For 2x – 3y = –7, when x = 4, What is the value of y?

Answer 1

5

Answer 2

first there again

Answer 3

2x - 3y = -7

When x = 4: 2(4) - 3y = -7
= 8 - 3y = -7

Subtract 8 from each side: -3y = -7 - 8
= -3y = -15

Divide each side by 3: -y = -5
Multiply each side by -1: y = 5 (You could have divided each side by -3 to get y = 5 as well.)