It just wants you to simplify your expression. Does every single variable have a number in common?
The answer is A for the correct answer
Answer:
x = 18
Step-by-step explanation:
All triangle angles add up to 180 so:
x + 5x + 72 = 180
6x + 72 = 180
6x = 180 - 72
6x = 108
x = 18
The answer for your question is (x,y)=(4,9)