Question

1) calcule a expressão
(3 + 1/2) x 4/5 + 1/10 =
A) 29/10
B) 45/10
C) 28/10​

Answer 1

Resposta:

$\\ (3 {}^{} + \frac{1}{2} ) \times \frac{4}{5} + \frac{1}{10} \\ \\ (\frac{6 + 1}{2} ) \times \frac{4}{5} + \frac{1}{10} \\ \\ \frac{7}{2} \times \frac{4}{5} + \frac{1}{10} \\ \\ \frac{28}{10} + \frac{1}{10}$

$\\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \frac{29}{10}$