The number $5$5 is plotted on the number line below.
Find the value of $5+7$5+7.
The number $-5$−5 is plotted on the number line below.
Find the value of $-5+7$−5+7.
The number $9$9 is plotted on the number line.
Find the value of $9-9$9−9.
The number $-6$−6 is plotted on the number line.
Find the value of $-6-6$−6−6.