Question

Примеры
2 5/21 + 1 9/14
5- (9/10-4/15)

Answer 1

2$frac{5}{21}$ + 1$frac{9}{14}$ = $frac{47}{21}$ + $frac{23}{14}$ = $frac{94+69}{42}$ = $frac{163}{42}$ = 3$frac{37}{42}$

5 - ($frac{9}{10}$ - $frac{4}{15}$)= 5 - $frac{27-8}{30}$= 5 - $frac{19}{30}$ = $frac{150-19}{30}$= $frac{131}{30}$= 4 $frac{11}{30}$