Решите уравнение 30/44+7x=5/12

30/44 + 7х = 5/12
15/22 + 7х = 5/12
7х = 5/12 - 15/22
7х = (5×11)/(12×11) - (15×6)/(22×6)
7х = 55/132 - 90/132
7х = (55-90)/132
7х = -35/132
х = (-35/132) ÷ 7
х = -35/(132×7)
х = -5/132
Ответ: -5/132

7х=5/12-30/44=-35/132. х=-35/132÷7=-35/132×1/7=-5/132