Для начала упростим уравнение:
12 (1 3/4x + 5/8) = -61/212 (7/4x + 5/8) = -61/212 7/4x + 12 5/8 = -61/221x + 30 = -61/2
Теперь выразим x:
21x = -61/2 - 3021x = -61/2 - 60/221x = -121/2x = -121/(2 * 21)x = -121/42x = -121/42
Ответ: x = -121/42
Для начала упростим уравнение:
12 (1 3/4x + 5/8) = -61/2
12 (7/4x + 5/8) = -61/2
12 7/4x + 12 5/8 = -61/2
21x + 30 = -61/2
Теперь выразим x:
21x = -61/2 - 30
21x = -61/2 - 60/2
21x = -121/2
x = -121/(2 * 21)
x = -121/42
x = -121/42
Ответ: x = -121/42