0,7(2x-5)=2,2-2(0,3x+7,85) как решить?
0.7(2х-5)=2.2-2(0.3х+7.85) 1.4х-3.5=2.2-0.6х-15.7 1.4х+0.6х=2.2-15.7+3.5 2х=-10 х=-10/2 х=-5