Question

Calcule o valor da soma

Answer 1

Explicação passo-a-passo:

$\sf \left(-\dfrac{3}{5}\right)+\left(-\dfrac{1}{4}\right)$

$\sf =-\dfrac{3}{5}-\dfrac{1}{4}$

$\sf =-\dfrac{4\cdot3}{20}-\dfrac{5\cdot1}{20}$

$\sf =-\dfrac{12}{20}-\dfrac{5}{20}$

$\sf =-\dfrac{17}{20}$