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4: 5 x 6 - 42: 6: 7=, 200 - 9 x 9 + 8 x 7=, 157 + 72: 8 - 6 x 8=, 4 x 2 x 6 + 63: 7: 3=

Răspuns :

200-82+56=200-138=62     157+9-48=166-48=118    8*6+9:3=48+3=51