Question

A=-\(\dfrac{5}{7}\)+\(\dfrac{8}{11}+\)\(\left(-\dfrac{2}{7}\right)\)+ \(\dfrac{1}{2}\)\(+\dfrac{3}{11}\)

Answer 1

\(=-\dfrac{5}{7}-\dfrac{2}{7}+\dfrac{8}{11}+\dfrac{3}{11}+\dfrac{1}{2}\)

\(=-1+1+\dfrac{1}{2}=\dfrac{1}{2}\)

Answer 2

\(A=(-5/7-2/7)+(8/11+3/11)+1/2=>A=-1+1+1/2=1/2\) nhé