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

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

Comments

А можешь по действиям?

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Решай в строку

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По действиям мне сложно))

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Жаль(