3,4х-4=4,38-х; 5-3х=2х-8; 1,5х+8=3,1х+16;

Question

3,4х-4=4,38-х;
5-3х=2х-8;
1,5х+8=3,1х+16;

Answer 1

1) 3.4x-4=4.38-x
    3.4x+x=4.38+4
    4.4x=8.38
    x=8.38:4.4
    x=1.9
2) 5-3x=2x-8
    -3x-2x=-8-5
    -5x=-13
    x=(-13):(-5)
    x=2.6
3) 1.5x+8=3.1x+16
    1.5x-3.1x=16-8
    -1.6x=8
    x=8:(-1.6)
    x=-5

Answer 2

1)3,4х-4=4,38-х
3,4+х=4,38+4
4,4х=8,38
х=8,38\4,4
х=83,8\4,4
х=1,9