Question

Calcule o valor das expressões numéricas.
a) 20:5 + 3.4 - 10:5
b) {[35 + 7 + 6.3].2 - 2.2+12 =​

Answer 1

$\frac{20}{5} +3 \times 4 - \frac{10}{5} \\ \\ 4 + 12 - 2 \\ \\ 14$

B

$(35 + 7 + 6 \times 3)2 - 2 \times 2 + 12 \\ \\ (42 + 18)2 - 4 + 12 \\ \\ 60 \times 2 + 8 \\ \\ 128$