Решите пж!!!!!!!!!!!!!!!

Question

Решите пж!!!!!!!!!!!!!!!

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Answer 1

1/4 + 1/10 = 5/20 + 2/20 = 7/20
7/20 - 5/8 = 14/40  - 25/40 = -11/40

Answer 2

Ответ 13 сороковы  13\40