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G = ( 3/2 + 1/4 ) + ( 9 - 1/2 )
= ( 6/4 + 1/4 ) + ( 36/4 - 8/4 )
= 7/4 + 28/4
= 35 /4
H = 7 + 1/3 - 3 /5
= 7 + 5/15 - 9 /15
= 7 - 4 /15
= 105/15 - 4 /15
= 101/15
I = 11 + ( 9 - 1 /7 )
= 11 + ( 63/7 - 1 /7 )
= 11 + 62 /7
= 77/7 + 62 /7
= 139/7