46 + 4/5 = 46.8
12.6 - 4x = 30
-4x = 17.4
x = -4.35
Проверка:
12.6 - 4(-4.35) = 30
12.6 + 17.4 = 30
30 = 30
Ответ: x = -4.35
46 + 4/5 = 46.8
12.6 - 4x = 30
-4x = 17.4
x = -4.35
Проверка:
46 + 4/5 = 46.8
12.6 - 4(-4.35) = 30
12.6 + 17.4 = 30
30 = 30
Ответ: x = -4.35