Question

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Answer 1

( - 5/14 ) * 21/25 - у = 3 3/4

У= ( - 5/14) * 21/25 - 3 3/4
У= - 5*21 / 14*25 - 3 3/4
У= - 3/10 - 3 3/4 = - 6/20 - 3 15/20 = - 3 21/20 = - 4 1/20
У= ( - 4 1/20 )