1)х+3=-6 2)12+х=-8 3)х-11=-7 4)100+х=0 5)12+х=-8 6)4х=3х 7)7х=4х

1)х+3=-6 х=-6-3 х=-9-9+3=-6-6=-62)12+х=-8 х=-8-12 х=-2012-20=-8-8=-8 3)х-11=-7 х=-7+11 х=44-11=-7-7=-7 4)100+х=0 х=0-100 х=-100100-100=00=0 5)12+х=-8 х=-8-12 х=-2012-20=-8-8=-8 6)4х=3х 4х-3х=0 х=04*0=3*00=07)7х=4х 7х-4х=0 3х=0 х=0/3 х=07*0=4*00=0