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if GH= 45 and GI= 61, then what does HI equal?

Verified Answer :

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 = 79+3 = 66 
HI = 3Y-5 = 39-5 = 22 
GI = 9Y+7 = 9*9+7 = 88

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