Решите уравнения :
а)8,3х+2х-60,5=300

б)(1,65 - 0,3х) :0,34 = 4,5

а 8.3х+2х-60.5=30010.3х-60.5=300300+60.5=360.510.3х=139.5х=139.5:10.3х=35б  4.5*0.34=1.531.65-0.3х=1.530.3х=1.65-1.530.3х=0.12х=0.4