1. If GH=31 and HI=11 then GI= GH+HI = 31+11 = 42
2. If GH=45 AND GI =61 then HI= GI-HG = 61-45 = 16
a. what is the value of Y?
Since GI = GH+HI
9Y+7 = 7Y+3+3Y-5
9Y+7 = 10Y-2
Y = 9
b. Find
GH = 7Y+3 = 7*9+3 = 66
HI = 3Y-5 = 3*9-5 = 22
GI = 9Y+7 = 9*9+7 = 88
