Question

Observe como podemos resolver a expressao (3/4+2/5:8/10)^3

Answer 1

(3/4+2/5:8/10)^3

(3/4+2/5*10/8)^3

(3/4+20/40)^3

(30/40+20/40)^3

=(50/40)³

=(5/4)³ =125/64

Answer 2

$( \frac{3}{4} + \frac{2}{5} \div \frac{8}{10}) {}^{3} = \\ ( \frac{3}{4} + \frac{2}{5} \times \frac{10}{8} ) {}^{3} \\ ( \frac{3}{4} + \frac{2}{4} ) {}^{3} \\ ( \frac{3}{4} + \frac{1}{2} ) {}^{3} \\ ( \frac{5}{4} ) {}^{3} \\ \frac{125}{64}$