Question

quanto é 5y - 5 + 4y + 23 = 180

Answer 1

5y-5+4y+23=180
9y=180-23+5
9y=162
y=162/ 9
y=18

Answer 2

5y - 5 + 4y + 23 = 180
5y + 4y - 5  + 23 = 180
9y - 5  + 23 = 180
9y+18=180
9y=180-18
9y=162
y=162/9
y=18