The answer is C
you substitute 3200 in for y
3200 = 168x +8
3192 = 168x
x=19
Answer:
8x + 5x = 13x
Step-by-step explanation:
Since these two can be added, you just add like normal and make sure you do not forget the x.

Explanation
Step 1
the sum of the internal angles in a triangle equals 18o, so

Step 2
now, replace the value of x in angle Q to find it

I hope this helps you
<span>x^2-10x
Factor out an x:
x(x-10)</span>