Question

5+6*7-8*(Y-9)-76:2=1

Answer 1

6*7=42
76/2=38
8*(y-9)=8y-72
5+42-8y+72-38=1
-8y+81=1
-8y=1-81
-8y=-80   / (-8)
y=10

Answer 2

5+42-8y+72-38=1
47-8y+34=1
81-8y=1
-8y=80
y=80:(-8)
y=-10