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Автор - di4901111

решите побыстрее 7/10 x - 10 1/2 = 15 2/5

Ответ

Автор - burxonovshohruh

x=10 1/2+ 7/10

x=2 1/5

2 1/5x=15 2/5

X=15 2/5 : 2 1/5

X=7 8/5

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