решить уравнения
а) 1,1+2х=5,5+3х
б) -0,15-3х=-7х+0,45
в) -3х-17=8х-105
г)0,2(2+у)=19-0,3у
д)(4-с)+2(с-3)=-13
е)-3(3b+1)-12=12
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