1+7(15-3х)-(2х+48)=-34(5-х)+18(1-2х)
1+7(15-3х)-(2х+48)=-34(5-х)+18(1-2х) 1+105-21x-2x-48=-170+34x+18-36x 1+105-48+170-18=34x-36x+21x+2x 210=21x x=210/21 x=10
1+7(15-3х)-(2х+48)=-34(5-х)+18(1-2х) 1+105-21х-2х-48=-170+34х+18-36х -23х-34х+36х= -58-152 -21х= -210 х=10