7/2+8/3+8/5+7/3+6/5+7/4
=(7/2+7/4)+(8/3+7/3)+(8/5+6/5)
=(7/2+7/4)+(8/3+7/3)+(8/5+6/5)
=21/4+15/3+14/5
=21/4+5+14/5
=(105+56)/20+5
=161/20+5
=8.05+5
=13.05
7/2+8/3+8/5+7/3+6/5+7/4
=3.5+8/3+1.6+7/3+1.2+1.75
=(3.5+1.6+1.2+1.75)+(8/3+7/3)
=8.05+15/3
=8.05+5
=13.05
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