Question

31/42-(-43/54)-(-79/81)+(-17/63)-(-37/63+67/81)

Answer 1

31/42-(-43/54)-(-79/81)+(-17/63)-(-37/63+67/81) =
= 31/42 + 43/54 + 79/81 - 17/63 + 37/63 - 67/81 =
= 31/42 + 43/54 + 79/81 - 67/81 + 37/63 - 17/63 =
= 31/42 + 43/54 + 12/81 +20/63 = 129/162 +24/162 + 93/126 + 40/126 =
= 153/162 + 133/126 = 17/18 +1+7/126 = 1 +17/18+ 1/18 = 2
Ответ: 2

Answer 2

А можешь по действиям?

Answer 3

Решай в строку

Answer 4

По действиям мне сложно))

Answer 5

Жаль(