|- 7/8 х| - |- 3/5 | = - | -3/10 | посчитайте , ААА​

|- 7/8 х| - |- 3/5 | = - | -3/10 |
1) -7х/8 -3/5 = -3/10
-7х/8 = -3/10 + 3/5
-7х/8 = -3/10 + 6/10
-7х/8 = 3/10
-7х = 24/10 = 12/5
х = 12/5 : (-7)
х2 = -12/35

2) 7х/8 - 3/5 = -3/10
7х/8 = -3/10 + 3/5
7х/8 = -3/10 + 6/10
7х/8 = 3/10
7х = 24/10 = 12/5
х = 12/5 : 7
х1 = 12/35

Верные ы: -12/35 и 12/35.