Question

MN ơi giúp em với gấp

Answer 1

17:

a: =(-5+1)/8=-4/8=-1/2

b: =33/21+5/21=36/21=12/7

c: \(=\dfrac{-3}{4}-\dfrac{1}{4}+\dfrac{2}{7}+\dfrac{5}{7}+\dfrac{3}{5}=1-1+\dfrac{3}{5}=\dfrac{3}{5}\)

d: \(=1-\dfrac{1}{2}+\dfrac{1}{2}-\dfrac{1}{3}+...+\dfrac{1}{99}-\dfrac{1}{100}=1-\dfrac{1}{100}=\dfrac{99}{100}\)