1) X + 6 = 8X = 8 - 6X = 2
2) 9 - y = 4-y = 4 - 9-y = -5y = 5
3) 90 - b = 20-b = 20 - 90-b = -70b = 70
1) X + 6 = 8
X = 8 - 6
X = 2
2) 9 - y = 4
-y = 4 - 9
-y = -5
y = 5
3) 90 - b = 20
-b = 20 - 90
-b = -70
b = 70