2(11х-5)-17х=55 5(8х+3)-12=83
2(11х-5)-17=55 22х-10 = 55+17 22х = 72+10 22х = 82 х = 3.7 5(8х+3)-12=83 40х+15 = 83+12 40х = 95-15 40х = 80 х = 2
2(11х-5)-17х=55 22х-10-17х=55 5х-10=55 5х=10+55 5х=65 х=65:5 х=13 5(8х+3)-12=83 40х+15-12=83 40х+3=83 40х=83-3 40х=80 х=80:40 х=2