Question

efetue 15/4 ÷ 2/3 + 8/5 ÷ 3/20
me ajudem pfvv​

Answer 1

$\frac{15}{4} \div \frac{2}{3} + \frac{8}{5} \div \frac{3}{20}$

$\frac{15}{4} \times \frac{3}{2} + \frac{8}{5} \times \frac{20}{3}$

$\frac{15}{4} \times \frac{3}{2} + 8 \times \frac{4}{3}$

$\frac{45}{8} + 8 \times \frac{4}{3}$

$\frac{45}{8} + \frac{32}{3}$

$\frac{45 \times 3 + 32 \times 8}{8 \times 3}$

$\frac{135 + 256}{24}$

$\frac{391}{24}$