решите пж .а) (х + 2,3) • 0,2 = 0,7; в) 4,2х + 8,4 = 14,7;
б) (2,8 - х) : 0,3 = 5; г) 0,39 : х - 0,1 = 0,16.

спс

a) 0.2x+0.46=0.70.2x=0.7-0.460.2x=0.24x=0.24:0.2x=1.2б)(2.8-x):0.3=52.8-x=1.5x=2.8-1.5x=1.3в)4.2x+8.4=14.74.2x=14.7-8.44.2x=6.3x=6.3/4.2x=1.5г)0.39:x-0.1=0.160.39:x=0.16+0.10.39:x=0.26x=0.39:0.26x=1.5