34 - (2x * 9) =28; 48 - 3x =36; 13 -100x =0; 7x -4 =x -16;

1) 34-(2х*9)=2834-18х=28-18х=28-34-18х=-6х=6/18х=1/32) 48-3х=36-3х=36-48-3х=-12х=-12:(-3)х=43) 13-100х=0-100х=-13х=13/100х=0,134) 7х-4=х-167х-х=-16+46х=-12х=-12:6х=-2