А)-3/5х=15 х=15*(-5/3) х=-25 б)9х+72,9=0 9х=0-72.9 9х=-72.9 х=-72.9:9 х=-8.1 в)2(0,6х+1,85)-0,7=1,3х 1.2х+3.7-0.7=1.3х 1.2.х-1.3х=-3 -0.1х=-3 х=-3:(-0.1) х=30
A) x=-25 б) х=-8.1 в) х=30