31/80+(3/16+39/80)= 2/45+(3/45+7/9)= (3/7+5/14)+1/14= 7/15+(2/15+1/5)= 3/16+(1/16+5/8)= (1/13+1/14)+12/13=

Question

31/80+(3/16+39/80)= 2/45+(3/45+7/9)= (3/7+5/14)+1/14= 7/15+(2/15+1/5)= 3/16+(1/16+5/8)= (1/13+1/14)+12/13=

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Accepted Answer

31/80+3/16+39/80=2/45+3/45+7/9=3/7+5/14+1/14=7/15+2/15+1/5=3/131/80+3/16+39/80=2/45+3/45+7/9=3/7+5/14+1/14=7/15+2/15+1/5=3/16+1/16+5/8=1/13+1/14+12/13