Question

A expressão numérica 81 1/2+32 1/5 tem qual valor?

Answer 1

81 1/2 = 163/2 e 32 1/5 = 161/5.  MMC (2,5) = 10
815/10 + 323/10 = 1138/10 ou 569/5

Answer 2

$81 \dfrac{1}{2} + 32 \dfrac{1}{5}$

Simpolicando

$\dfrac{81}{2} + \dfrac{32}{5}$

mmc = 2, 5 = 10


$\dfrac{405 + 64}{10} \\ \\ \\ =>\dfrac{469}{10}$