Решите уравнение а)8x+16=x-3 б)-(x+5)+(2x-12)=x-3 в)2*(x+5,4)-3*(7,2-x)=8
8х+16=х-3 8х-х=16-3 7х=19 х=-2.7 -(х+5)+(2х-12)=х-3 х-5-2х+12=х-3 х-2х-х=5-12-3 -2х=-10 х=5 2*(х+5.4)-3*(7.2-х)=8 2х+10.8-21.6-3х=8 2х-3х=8-10.8+21.6 -1х=18.8 х=-18.8