4.7y - 2.5y - 12.4 = 1.9
Combine like terms:
2.2y - 12.4 = 1.9
Add 12.4 to both sides:
2.2y = 14.3
Divide by 2.2:
y = 6.5
Ответ: у = 6,5.
4.7y - 2.5y - 12.4 = 1.9
Combine like terms:
2.2y - 12.4 = 1.9
Add 12.4 to both sides:
2.2y = 14.3
Divide by 2.2:
y = 6.5
Ответ: у = 6,5.