Question

responder urgente,valendo 10 pontos​

Answer 1

Resposta:

Vamos lá!

$A=\dfrac{1}{3} ||B=\dfrac{2}{4} ||C=\dfrac{3}{4} ||D=\dfrac{1}{2}\\\\\\A+B=\dfrac{1}{3} +\dfrac{2}{4}=\dfrac{4+6}{12}=\dfrac{10}{12}=\dfrac{5}{6}\\\\\\B+C=\dfrac{2}{4} +\dfrac{3}{4} =\dfrac{5}{4}=1\dfrac{1}{4}\\\\\\D-A=\dfrac{1}{2}-\dfrac{1}{3}=\dfrac{3-2}{6}=\dfrac{1}{6}\\\\\\D-B=\dfrac{1}{2}-\dfrac{2}{4} =\dfrac{1}{2}-\dfrac{1}{2}=0$

Bons estudos!!!

Prof Alexandre