(x+15)-8=17
x + 15 – 8 = 17
x = 17 + 8 – 15
x = 10
(24+x)-21=10
24 + x – 21 = 10
x = 10 + 21 – 24
x = 7
(45-y)+18=58
45 – y + 18 = 58
– y = 58 – 18 – 45
-y = -5
y = 5
(y-35)+12=32
y – 35 + 12 = 32
y = 32 – 12 + 35
y = 55
(x+15)-8=17
x + 15 – 8 = 17
x = 17 + 8 – 15
x = 10
(24+x)-21=10
24 + x – 21 = 10
x = 10 + 21 – 24
x = 7
(45-y)+18=58
45 – y + 18 = 58
– y = 58 – 18 – 45
-y = -5
y = 5
(y-35)+12=32
y – 35 + 12 = 32
y = 32 – 12 + 35
y = 55