The three angles must add to 180. So x=180-(50+90)= 40 degrees.

There are
shaded parts and
total parts.
Write this as a fraction.

Simplify the fraction.

Answer: B and C
Step-by-step explanation:
The answer is C. The numerator 7x+14 can be factored as 7(x+2). The denominator 2x^2+2x-6 can be factored as (x+2)(2x-3). The greatest common divisor of 7(x+2) and (x+2)(2x-3) is obviously x+2, which is contained in both of the two expressions.