Answer:
x=15
Step-by-step explanation:
Since the whole thing is a straight angle, the inside angles are going to have to add up to 180, and we already know their is a 90 degree angle inside of it so:
180-90=90
We have 90 left. Since the last to angles are like-terms, we can add them:
5x+x=90
Add x:
6x=90
Divide by 6:
x=15
