1) 3(х-5)-1=6-2х 2) 3(х-у)-7у=-4
3х-15-1=6-2х 3х-3у-7у=-4
3х+2х=6+15-1 3х-10у=-4
5х=20 3х=-4+10у
х=4 4 10
х=- __+__у
3 3
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1) 3(х-5)-1=6-2х 2) 3(х-у)-7у=-4
3х-15-1=6-2х 3х-3у-7у=-4
3х+2х=6+15-1 3х-10у=-4
5х=20 3х=-4+10у
х=4 4 10
х=- __+__у
3 3