1) х= 45/7
2) (5х-3)/5= 4/7
(5х-3)= 20/7
5х=3+ 20/7
5х= 41/7
Х= 41/7 *1/5= 41/35
3) (3х+1)/3= (2х-1)/2
3х+1= 3(2х-1)/2
3х+1= (6х-3)/2
2(3х+1)= 6х-3
6х+2=6х-3
2 не равно - 3
Корней нет
1) х= 45/7
2) (5х-3)/5= 4/7
(5х-3)= 20/7
5х=3+ 20/7
5х= 41/7
Х= 41/7 *1/5= 41/35
3) (3х+1)/3= (2х-1)/2
3х+1= 3(2х-1)/2
3х+1= (6х-3)/2
2(3х+1)= 6х-3
6х+2=6х-3
2 не равно - 3
Корней нет