Question

Can someone help me with this?​

Answer 1

1)
`4+5=9`.

2)
`2+(-6)=-4`

3)
`-3+(-7)=-10`

4)
`(-7)+3=-4`

5)
`9+(-4)=5`

6)
`-1+4=3`

7)
`5+(-5)=0`

8)
`-3+(-6)=-9`

Explanation:

In the given number lines, rightarrows represent positive integers and leftarrows represent negative integers.

1)

In first number line we have two rightarrows.

Rightarrow from 0-4 = 4

Rightarrow from 4-9 = 5

So, required sum is
`4+5=9`.

Similarly,

2)

`2+(-6)=-4`

3)

`-3+(-7)=-10`

4)

`(-7)+3=-4`

5)

`9+(-4)=5`

6)

`-1+4=3`

7)

`5+(-5)=0`

8)

`-3+(-6)=-9`