решите
8,3*х+2*х-60,5=300
(2,1-0,7*х):0,48=3,5

10.3х-60.5=30010.3х=300+60.510.3х=360.5х=360.5:10.3х=35Ответ:35(2.1-0.7х)=3.5*0.48(2.1-0.7х)=1.68-0.7х=1.68-2.1-0.7х=-0.42х=-0.42:(-0.7)х=0.6Ответ:0.6