Question

номер 8 плиз помогите

Answer 1

5х-3х=-8+8
2х=0
х=0
2/5х-3/4х=1-13/20
8/20х-15/20х=20/20-13/20
-7/20х=7/20
х=7/20:(-7/20)
х=-1

х/2+х/3=2+3
3х/6+2х/6=5
5х/6=5
х=5*6/5
х=6

-х-3х=-9/5+5/2-29/4-41/5
-4х=-50/5-19/4
-4х=-200/20-95/20
-4х=-295/20
х=295/20*1/4
х=59/16
х=3 11/16

2х-3/4х=1 1/2
1 1/4х=3/2
х=3/2*4/5
х=6/5
х=1 1/5