Question

Resolva a expressão :

(1/4+2/5) : (1/3+1/10)

Answer 1

Olá, boa noite ☺

Resolução:

$( \frac{1}{4} + \frac{2}{5})\div( \frac{1}{3} + \frac{1}{10} ) \\ \\ ( \frac{5+8}{20} )\div( \frac{10+3}{30}) \\ \\ \frac{13}{20} \div \frac{13}{30}= \frac{13}{20} . \frac{30}{13} = \frac{390}{260} \div \frac{130}{130} = \frac{3}{2}$

Bons estudos :)