3y+1) (4y-5)-(6y-11) (2y-7)=24

Question

3y+1) (4y-5)-(6y-11) (2y-7)=24

Answer 1

раскрываем скобки 12у^2-15y+4y-5-12y^2+42y+22y-77=24

-15y+4y-5+42y+22y-77=24

53y =24+82

y=106/53

y=2