Question

Tính : a) -5 phần 9 - 5 phần 9 b) 9 phần 36 - 7 phần -35 c) -11 phần 2 - (-1)

Answer 1

a: =(-5-5)/9=-10/9

b: =1/4+1/5=9/20

c: =-11/2+2/2=-9/2

Answer 2

a)-10/9

b)9/20

c)-9/2

sai thì sorry

Answer 3

a) \(\dfrac{-5}{9}-\dfrac{5}{9}=\dfrac{\left(-5\right)-5}{9}=\dfrac{-\left(5+5\right)}{9}=\dfrac{-10}{9}\)

b) \(\dfrac{9}{36}-\dfrac{7}{-35}=\dfrac{1}{4}+\dfrac{1}{-5}=\dfrac{9}{-20}\)

c) \(\dfrac{-11}{2}-\left(-1\right)=\dfrac{-11}{2}+\dfrac{2}{2}=\dfrac{9}{2}\)