A) (x+15) - 8 = 17x + 15 - 8 = 17x + 7 = 17x = 17 - 7x = 10
B) (24 + x) - 21 = 1024 + x - 21 = 10x + 3 = 10x = 10 - 3x = 7
C) (45 - y) + 18 = 5845 - y + 18 = 58-y + 63 = 58-y = 58 - 63-y = -5y = 5
A) (x+15) - 8 = 17
x + 15 - 8 = 17
x + 7 = 17
x = 17 - 7
x = 10
B) (24 + x) - 21 = 10
24 + x - 21 = 10
x + 3 = 10
x = 10 - 3
x = 7
C) (45 - y) + 18 = 58
45 - y + 18 = 58
-y + 63 = 58
-y = 58 - 63
-y = -5
y = 5