2 6/7
Пошаговое объяснение:
-3/5х+1/4х+4/7=-3/7
4/7 + 3/7 = (3/5)х - (1/4)х
1 = (7/20)х
х=1 : 7/20 = 20/7 = 2 6/7
2 6/7
Пошаговое объяснение:
-3/5х+1/4х+4/7=-3/7
4/7 + 3/7 = (3/5)х - (1/4)х
1 = (7/20)х
х=1 : 7/20 = 20/7 = 2 6/7