Решить (7/20 + 2/5)* 2 -1

Question

Решить (7/20 + 2/5)* 2 -1

Answer 1

(7/20 + 2/5) *2 -1 = (7/20 +8/20) *2 -1 = (15/20) * 2 - 1 = 30/20 - 1 = 1 1/2 - 1 = 1/2

Comments

а ответ1/2

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да