Question

1)3/7--11/7
2)5/9--10/18
3)-5/9--10/18

Answer 1

1: =3/7+11/7=14/7=2

2: =5/9+5/9=10/9

3: =-5/9+10/18=0

Answer 2

1. \(\dfrac{3}{7}-\dfrac{-11}{7}=\dfrac{3}{7}+\dfrac{11}{7}=\dfrac{14}{7}=2.\)

2. \(\dfrac{5}{9}-\dfrac{-10}{18}=\dfrac{10}{18}+\dfrac{10}{18}=\dfrac{20}{18}=\dfrac{10}{9}.\)

3. \(\dfrac{-5}{9}-\dfrac{-10}{18}=\dfrac{-10}{18}+\dfrac{10}{18}=0\)

Answer 3

1)`3/7- -11/7`

`= 3/7 + 11/7 = 14/7 `

`=2`
2)`5/9- (-10)/18`

`= 10/18 + 10/18`

`= 20/18 = 10/9`
3)`-5/9--10/18`

`= -5/9 + 10/18`

`= -5/9 + 5/9 = 0`

Answer 4

Answer 5

\(\dfrac{3}{7}-\left(-\dfrac{11}{7}\right)=\dfrac{3}{7}+\dfrac{11}{7}=\dfrac{14}{7}=2\)

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\(\dfrac{5}{9}-\left(-\dfrac{10}{18}\right)=\dfrac{5}{9}+\dfrac{5}{9}=\dfrac{10}{9}\)

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\(-\dfrac{5}{9}-\left(-\dfrac{10}{18}\right)=-\dfrac{5}{9}+\dfrac{5}{9}=0\)