Answer:
6
Step-by-step explanation:
Given this number line, DB = [?]
13 - 11 = <u>x</u>
11 - <u>v</u> = 7
13 - 11 = <u>2</u>
<u>2 = x</u>
<u />
7 + <u>4</u> = 11
<u>4 = v</u>
<u>v + x = ?</u>
<u>2 + 4 = 6</u>
Given this number line, DB = [6]
20
x=12/23
Isolate the variable by dividing each side by factors that don't contain the variable.