2х-3у=10
у=-0,5-5х
2х-3*(-0,5-5х)=10
х=0,5
у=-0,5-5*0,5
у=-3
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2х-3у=10
у=-0,5-5х
2х-3*(-0,5-5х)=10
х=0,5
у=-0,5-5*0,5
у=-3