Question

Tính một cách hợp lí 

a)14/13+(-1/13-19/20)

b)-24/17-(-7/17-1/16)

Answer 1

a)14/13+(-1/13-19/20)=1/20 

b)-24/17-(-7/17-1/16)=-479/272

Answer 2

\(a,=\dfrac{14}{13}-\dfrac{1}{13}-\dfrac{19}{20}\\ =1-\dfrac{19}{20}=\dfrac{20}{20}-\dfrac{19}{20}\\ =\dfrac{1}{20}\\ b,=\dfrac{-24}{17}+\dfrac{7}{17}+\dfrac{1}{16}\\ =-1+\dfrac{1}{16}\\ =\dfrac{-16}{16}+\dfrac{1}{16}=\dfrac{-15}{16}\)

Answer 3

^{_{a)14/13+(-1/13-19/20)=1/20}}

 

^{_{b)-24/17-(-7/17-1/16)=-479/272}}

Answer 4

Hi mấy bro