Question

Como calcular o resultado da adicao (-2/3)+(+5/4)

Answer 1

$\large\boxed{\begin{array}{l}\begin{array}{c|c}\rm3,4&\rm2\\\rm3,2&\rm2\\\rm3,1&\rm3\\\rm1,1\end{array}\\\rm m\cdot m\cdot c\,(3,4)=2\cdot2\cdot3=12\\\rm\bigg(-\dfrac{2}{3}\bigg)+\bigg(+\dfrac{5}{4}\bigg)\\\\\rm-\dfrac{2}{3}+\dfrac{5}{4}=-\dfrac{8}{12}+\dfrac{15}{12}=\dfrac{-8+15}{12}=\dfrac{7}{12}\checkmark\end{array}}$