Question

b) Num mercado havia 85 3/4 jacas. Foram vendidas 16 1/ 2. Quantas jacas restaram​

Answer 1

$85 \times \frac{3}{4} - 16 \times \frac{1}{2} \\ \\ \frac{343}{4} - 16 \times \frac{1}{2} \\ \\ \frac{343}{4} - \frac{33}{2} \\ \\ \frac{343}{4} - \frac{33}{2} \times \frac{2}{2} \\ \\ \frac{343}{4} - \frac{33 \times 2}{4} \\ \\ \frac{343 - 33 \times 2}{4} \\ \\ \frac{277}{4} \\ \\</p><p>R:</p><p>[tex]</p><p>69 \frac{1}{4}$