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28 - 5 x 4 = 28 - 20 = 8

(17 + 33) : 10 = 50 : 10 = 5

36 : 3 : 2 = 12 : 2 = 6

20 - 64 : 8 = 20 - 8 = 12

2 x 15 - 10 = 30 - 10 = 20

(18 - 7 + 32 - 13) : 2 = (11 + 19) : 2 = 30 : 2 = 15

(16 + 6)/2 = 22/2 = 11

18 : 6 x (17 - 14) = 3 x 3 = 9

16 - 2 x 8 + 7 = 16 - 16 + 7 = 7

18 - 25 : (2 + 3) = 18 - 25 : 5 = 18 - 5 = 13

34 : 2 - 5 x 3 = 17 - 15 = 2

(19 + 37) : 8 x 4 = 56 : 8 x 4 = 7 x 4 = 28