Question

Answer 1

a: =-3/7-4/7+5/13

=5/13-1

=-8/13

b: \(=\dfrac{12}{19}-\dfrac{12}{19}-\dfrac{8}{13}-\dfrac{5}{13}+2=2-1=1\)

c: \(=10+\dfrac{2}{9}+2+\dfrac{3}{5}-5-\dfrac{2}{9}=7+\dfrac{3}{5}=7.6\)

d: \(=\dfrac{-5}{7}\left(\dfrac{3}{11}+\dfrac{8}{11}\right)+\dfrac{5}{7}=\dfrac{-5}{7}+\dfrac{5}{7}=0\)

e: \(=\dfrac{5}{7}\left(\dfrac{10}{11}+\dfrac{14}{11}-\dfrac{17}{11}\right)=\dfrac{5}{7}\cdot\dfrac{7}{11}=\dfrac{5}{11}\)