Question

b) (3/4+1/2) : (1 inteiro e 1/2 - 3/4)

Answer 1

$( \frac{3}{4} + \frac{1}{2} )\div(1 \frac{1}{2} - \frac{3}{4} )= \\ \\ ( \frac{3+2}{4} )\div( \frac{3}{2} - \frac{3}{4} )= \\ \\ \frac{5}{4} \div ( \frac{6-3}{4} )= \\ \\ \frac{5}{4} \div \frac{3}{4} = \\ \\ \frac{5}{\not4} \times \frac{\not4}{3} = \frac{5}{3}$