Question

A diferença 3 1/4 - 1 3/8 e

Answer 1

$3 \times \frac{1}{4} - 1 \times \frac{3}{8} \\ \frac{12 + 1}{4} - \frac{8 + 3}{8} \\ \frac{13}{4} - \frac{11}{8} \\ mmc(4.8) = 8 \\ \frac{13 \times 2}{8} - \frac{11 \times 1}{8} \\ \frac{26}{6} - \frac{11}{8} \\ \frac{15}{8}$