Answer:
1) [tex]4+5=9[/tex].
2) [tex]2+(-6)=-4[/tex]
3) [tex]-3+(-7)=-10[/tex]
4) [tex](-7)+3=-4[/tex]
5) [tex]9+(-4)=5[/tex]
6) [tex]-1+4=3[/tex]
7) [tex]5+(-5)=0[/tex]
8) [tex]-3+(-6)=-9[/tex]
Step-by-step 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 [tex]4+5=9[/tex].
Similarly,
2)
[tex]2+(-6)=-4[/tex]
3)
[tex]-3+(-7)=-10[/tex]
4)
[tex](-7)+3=-4[/tex]
5)
[tex]9+(-4)=5[/tex]
6)
[tex]-1+4=3[/tex]
7)
[tex]5+(-5)=0[/tex]
8)
[tex]-3+(-6)=-9[/tex]
