Question

Sendo A =3\10 e B = 3\4 , qual o valor de A + B?

Answer 1

$\large\boxed{\begin{array}{l}\begin{array}{c|c}\rm10,4&\rm2\\\rm5,2&\rm2\\\rm5,1&\rm5\\\rm1,1\end{array}\\\\\rm m\cdot m\cdot c\,(10,4)=2\cdot2\cdot5=20\\\rm A+B=\dfrac{3}{10}+\dfrac{3}{4}\\\\\rm A+B=\dfrac{6+15}{20}\\\\\rm A+B=\dfrac{21}{40}\end{array}}$