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(32-m)* 6 - 39=45

15 768: t=32 112 : 892

(32 - m) × 6 - 39 = 45

(32-m) × 6 = 45 + 39

(32 - m) × 6 = 84

(32 - m) 84 ÷ 6

(32-m) = 14

m = 32 - 14

m = 18

(32 - 18) × 6 - 39 =45

15 768 ÷ t = 32 112 ÷ 892

15 768 ÷ t = 36

t = 15 768 ÷ 36

t = 438

15 768 ÷ 438 = 32 112 ÷ 892