Answer: B. 90.
Explanation:
Let’s add up all the like terms on the left side of the equation.
124 + 56 + 62 + 28 + x = 360.
270 + x = 360.
Now we can subtract 270 degrees on both sides to find x.
270 + x = 360.
x = 90.
Choice B is the only coorect one.