Question

(24+x)-21=10    (45-y)+18=58    (y-35)+12=32    56-(x+12)=24   55-(x-150=30

Answer 1

(24+x)-21=10
24+х-21=10
х=10-24+21
х=7

(45-y)+18=58
45-у+18=58
-у=58-45-18
-у=-5
у=5

(y-35)+12=32
у-35+12=32
у=32+35-12
у=55

56-(x+12)=24 
56-х-12=24
-х=24-56+12
-х=-20
х=20

55-(x-150=30
55-х+150=30
-х=30-55-150
-х=-175
х=175