Question

Calcular o valor das expressões numéricas, lembrando a ordem das operações:
a) 3/2+1/3×6/5=
b) 2×3/4+2/3×9/4=

Answer 1

$a) \\ \frac{3}{2} + \frac{1}{\not3} \times \frac{\not6^2}{5} = \\ \\ \frac{3}{2} + \frac{2}{5} = \\ \\ \frac{15+4}{10} = \frac{19}{10} \mapsto1~inteiro~e \frac{9}{10} \\ \\ \\ b) \\ \not2\times \frac{3}{\not4_2} + \frac{\not2}{\not3} \times \frac{\not9^3}{\not4_2} = \\ \\ \frac{3}{2} + \frac{3}{2} = \frac{3+3}{2} = \frac{6}{2} =3$