Question

Qual o valor da expressao
$\frac{4}{5}$ - ( $\frac{2}{3}$-$\frac{1}{2}$ ):


a)19/5

b)19/30

c)5/30

d)30/19

Answer 1

Explicação passo-a-passo:

4/5 - (2/3 - 1/2)=

4/5 - (4-3/6)=

4/5 -(+1/6)=

4/5 - 1/6=

24-5/30=

19/30