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6+2y−3(y+1)=5y+4(y+7)+7
6+2y-3y-3 = 5y+4y+28 + 7
2y-3y-5y-4y = 28+7-6+3
-10y = 32
y = - 32/10
y = -3,2
saludos
6 + 2y - 3y - 3 = 5y + 4y + 28 + 7
- y + 3 = 9y + 35
- y - 9y = 35 - 3
- 10y = 32
y = 32/-10-----sacamos la mitad
y = -16/5
Solución :
y = -16/5