Solve for y:
7-(y)/(3) = 12
Put each term in 7-(y)/(3) over the common denominator 3: 7-(y)/(3) = 21/3-(y)/3:
21/3-y/3 = 12
21/3-y/3 = (21-y)/3:
(21-y)/3 = 12
Multiply both sides of (21-y)/3 = 12 by 3:
(3 (21-y))/3 = 3×12
(3 (21-y))/3 = 3/3×(21-y) = 21-y:
21-y = 3×12
3×12 = 36:
21-y = 36
Subtract 21 from both sides:
(21-21)-y = 36-21
21-21 = 0:
-y = 36-21
36-21 = 15:
-y = 15
Multiply both sides of -y = 15 by -1:
-y/(-1) = -15
(-1)/(-1) = 1:
Answer: |y = -15
