Question

Найдите значение выражения. 4целых-(41/84-5/21)+7целых11/30

Answer 1

$4-( frac{41}{84} - frac{5}{21} )+ 7 frac{11}{30} = 4-( frac{41}{84} - frac{20}{84} )+ 7 frac{11}{30} = \ 4- frac{41-20}{84} + 7 frac{11}{30} = 4- frac{21}{84} + 7 frac{11}{30} = \ = 4- frac{1}{4} + 7 frac{11}{30} =3 frac{3}{4} + 7 frac{11}{30} = \ frac{3*4+3}{4} + frac{7*30+11}{30} = frac{15}{4} + frac{221}{30} = \ frac{15*15}{60} + frac{221*2}{30}= frac{225}{60} + frac{442}{30}= \ frac{225+442}{60} = frac{667}{60} = 11 frac{7}{60}$

Answer 2

Можешь написать по 5 клаасу?