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

Математика: 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= решить

annakivilyova · Answer

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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= решить