Question

Efetue:

$\frac{5}{6}$ + ($\frac{27}{6}$ - 4) ÷ $\frac{4}{3} - \frac{5}{7}$

Answer 1

Devemos resolver primeiro que está dentro do parêntesis:


$\frac{5}{6}+(\frac{27}{6}-4):\frac{4}{3}-\frac{5}{7}\\ \\ =\frac{5}{6}+(\frac{27-24}{6}):\frac{4}{3}-\frac{5}{7}\\ \\ =\frac{5}{6}+\frac{3}{6}:\frac{4}{3}-\frac{5}{7}$

Agora que resolvemos o parêntesis, devemos resolver a divisão:

$=\frac{5}{6}+\frac{3}{6}:\frac{4}{3}-\frac{5}{7}\\ \\ =\frac{5}{6}+\frac{3}{6}\cdot\frac{3}{4}-\frac{5}{7}\\ \\ =\frac{5}{6}+\frac{3}{8}-\frac{5}{7}$

Agora basta somar:

$=\frac{5}{6}+\frac{3}{8}-\frac{5}{7} \\ \\ =\frac{28\cdot 5+21\cdot 3-24\cdot 5}{168}=\frac{83}{168}$

Answer 2

Boa noite Agnes

5/6 + (27/6 - 4)/(4/3) - 5/7 = 

5/6 + ((27 - 24)/6)/(4/3) - 5/7 = 

5/6 + (1/2)*(3/4) - 5/7 

mmc(6,7,8) = 168

5/6 + 3/8 - 5/7 = 140/168 + 63/168 - 120/168 = 83/168