31/80+(3/16+39/80) 2/45+(3/45+7/9) (3/75+5/14)+1/14 - вопрос №31803163980245345793755141148891041 от yagodka343 24.03.2020 17:47

Question

Математика: 31/80+(3/16+39/80) 2/45+(3/45+7/9) (3/75+5/14)+1/14 вычислите используя законы сложения

yagodka343 · Answer

31/80+(3/16+39/80)=31/80+39/80+3/16=7/8+3/16=14/16+3/16=17/16=1 1/162/45+(3/45+7/9)=2/45+3/45+7/9=1/9+7/9=8/9(3/75+5/14)+1/14=5/14+1/14+3/75=3/7+3/75=225/525+21/525=246/525=82/175...