Question

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20 2/3+(3-2/11) : 5 1/6 - 7,5=

Answer 1

Ответ: $13\frac{47}{66}$

$20\frac{2}{3}$ + ($3 - \frac{2}{11}$) : $5 \frac{1}{6}$ - $7\frac{5}{10}$ = $13\frac{47}{66}$

1) $3 - \frac{2}{11}$ = $2\frac{9}{11}$

2) $2\frac{9}{11}$ : $5 \frac{1}{6}$ = $\frac{32}{11}$ * $\frac{6}{31}$ = $\frac{186}{341}$ = $\frac{6}{11}$

3) $20\frac{2}{3}$ + $\frac{6}{11}$ = $\frac{62}{3}$ + $\frac{6}{11}$  = $\frac{682}{33}$ + $\frac{18}{33}$ = $\frac{700}{33}$ = $21\frac{7}{33}$

4) $21\frac{7}{33}$ -  $7\frac{5}{10}$ = $\frac{700}{33}$ - $\frac{75}{10}$ = $\frac{7000}{330}$ - $\frac{2475}{330}$ = $\frac{4525}{330}$ = $\frac{905}{66}$ = $13\frac{47}{66}$

Ответ: $13\frac{47}{66}$

Пошаговое объяснение:

Удачи!