-6(х+2)=4х-17-6х-12=4x-17-6x-4x=-17+12-10x=-5x=1/2x=0.5(18x-19)-(4-7x)=-7318x-18-4+7x=-7325x-22=-7325x=-73+2225x=-51x=-51/25x=-2 1/25 или х=-2,0410х+3(7-2x)=13+2x10x+21-6x=13+2x4x+21=13+2x4x-2x=13-212x=-8x=-4-3(4-5y)+2(3-6у)=-3,9-12+15у+6-12у=-3,9-6+3у=-3,93у=-3,9+63у=2,1у=0,70,7-0,2x=0.3x-1.8-0.2x-0.3x=-1.8-0.7-0.5x=-2.5x=50.1x+9=0.2x-40.1x-0.2x=-4-90.1x=-13x=130