November 2021 0 15 Report
Решите уравнения: 1) 4(2х-1/4)-(х+1)=7(х+2/7)
2) 5(0,4у-0,3)+0,5(3-4у)=0
3) 6 (2/3х-1)+(-2х-3)=2(х-3)
4) 0,2(15у+4)-0,6(5у+1)=0,2
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