Answer:
21
Step-by-step explanation:
Multiply by 3/5 (three fifths)
If the whole angle (ABC) is equal to 133, we can add angles ABD and DBC to find x.
10x+13=133
Subtract 13 from both sides to get
10x=120
Divide both sides by 10 to get that x=12
We can now plug the value of x into ABD to find its measure.
7(12)+4
Simplifies to 84+4, which is 88
So angle ABD is equal to 88 degrees.
:)
The answer is 5x + 10 because you have to times 5 by everything in the parenteses