Question

Alguém resolve pelo menos uma dessas pra mim? Pfv​

Answer 1

Resposta:

j) $(-\frac{4}{9}) . \frac{1}{2} = (-\frac{4}{18} )$

Answer 2

Resposta:

j)

$(-\dfrac{\not4^2}{9})\times\dfrac{1}{\not2}=-\dfrac{2}{9}$

k)

$(+\dfrac{5}{\not4})\times(-\dfrac{\not4}{11})=-\dfrac{5}{11}$

l)

$(+\dfrac{6}{10})\times(-\dfrac{1}{3})=-\dfrac{6}{30}=-\dfrac{1}{5}$

m)

calcula cancelando

$(-\dfrac{\not7}{\not2})\times(+\dfrac{\not3}{\not14_2})\times(-\dfrac{\not2}{\not3})=+\dfrac{1}{2}$