4y+(5-1)(3y-9) решение

Question

4y+(5-1)(3y-9) решение

Answer 1

4y+ ( 5 - 1)(3y - 9) = 0
4y + 4( 3y - 9) = 0
4y + 12y - 36 = 0
16y = 36
y = 36/16
y = 9 / 4
y = 2,25

Answer 2

4y+15y-45-3y+9=0
16y-36=0
16y=36
y=2