решите уравнение:
1) 2х+7=х+5,5;
2) 9,5х+2=5,7х-5,6
3) 2,9х+7,4=х+1,7

2х+7=х+5,52х-х=5,5-71х=-1,5х=-1.5:1х=1.5________9.5х+2=5,7х-5.69.5х-5.7х=-5.6-23.8х=-7.6х=-7.6:3.8х=-2_______2.9х+7.4=Х+1.72.9х-х=1.7-7.41.9х=-5.7х=-5.7:1.9х=-3------------------------