-9y+16=16
-16 -16
-9y=0
-9y/-9 0/-9=0
Y=0
Check:
-9(0)+16=16
-9*0=0+16=16
It's correct because the answer equals 16 when you plugged in y into the problem
Remember: To check your answer plug in y to the problem.
By the way I checked the multiplication and division stuff with a calculator