October 2021 0 4 Report
a)-1  7/25a * (-5/8b) * (-5c) б)1,4a - (2,5-a)+ (1,3 - 2,3a) в)2  1/3 (3/7x - 3y)-2 (-y-x)   и вот ещё: 2(x - 4) - 1,2(x+7)=-0,4
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