Question

Determine o valor de Determine o valor de 3/5 x 7/4 - 9/5 x 1/4 por favor me ajude!!

Answer 1

$\frac{3}{5} \times \frac{7}{4} - \frac{9}{5} \times \frac{1}{4}= \frac{21}{20}- \frac{9}{20}= \frac{21-9}{20}= \frac{12^{:4}}{20_{:4}}=\frac{3}{5}$