Question

Answer 1

-5/7+8/11+-2/7+1/2+3/11

=(-5/7+-2/7)+(8/11+3/11)+1/2

=-1+1+1/2

=1/2

Answer 2

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