Question

calcule o valor da expressão (-0,25)÷(4)-(0,25)÷-(-2)=​

Answer 1

$\frac{-0,25 \times 4}{4 \times 4} = - \frac{1}{16}$

$\frac{-0,25}{ - ( - 2)} = - \frac{0,25 \times 8}{2 \times 8 } = - \frac{2}{16}$

$\frac{-0,25}{4} - \frac{0,25}{ - ( - 2)} \\ = - \frac{1}{16} - ( - \frac{2}{16} )$

$- \frac{1}{16} + \frac{2}{16} = \frac{1}{16}$