2x+3=3x 5-x=3x+4 x-7+8x=9x-3-4x 11x-42-2x=100-9x-22

Question

2x+3=3x 5-x=3x+4 x-7+8x=9x-3-4x 11x-42-2x=100-9x-22

Answer 1

2х+3=3х, 3=х

5-х=3х+4, 4х=1, х=0,25 

х-7+8х=9х-3-4х, 4х=4, х=1

11х-42-2х=100-9х-22, 18х=120, х= =  6