Solve:

8y(5y-1)-10y(4y-5)=6y-5(3+y)-67

2 answers

y = -2
40 y^2 - 8 y - 40 y^2 + 50 y = 6 y -15 - 5 y - 67
42 y = y - 82
41 y = -82
y = -2