Question

calcule o valor das expressões a seguir. : 1/2×(3-1/2).(1/5-4)​

Answer 1

Resposta:

-19/4

Explicação passo-a-passo:

$\frac{1}{2} \times (3 - \frac{1}{2} ) \times ( \frac{1}{5} - 4) = \\ \frac{1}{2} \times ( \frac{6 - 1}{2} ) \times ( \frac{1 - 20}{5} ) = \\ \frac{1}{2} \times \frac{5}{2} \times ( \frac{ - 19}{5} ) = \frac{ - 95}{20} = \frac{ - 19}{4}$