Question

como resolver esta conta 6+7/8:21/4-5/3

Answer 1

6+ 7/8: 21/4 - 5/3
6 + $\frac{7}{8} : \frac{21}{4} - \frac{5}{3}$

$6 + \frac{ 7 x 4}{8 x 21} - \frac{5}{3}$

$6+ \frac{28}{168} - \frac{5}{3}$
Simplificando  $\frac{28}{168} temos \frac{1}{6}$

$6+ \frac{1}{6} - \frac{5}{3}$

Tirando o mmc de 3 e 6 = 6
$\frac{36}{6} + \frac{6}{6} - \frac{10}{6}$
6+ 1 - $\frac{10}{6}$
7- $\frac{5}{3}$ = 7- 1,666... = 5,333333333....