In triangle CDE, angle C = (4x - 16) degrees, angle D = (6x - 1) degrees, and angle E = (4x - 13) degrees. Find angle C.
Hint: C+D+E = 180
angle C = 44 degrees
Not sure why you would go through the effort of pressing enter so many times, but I might as well put a full walkthrough here.
The guest is correct, the critical information here is that C + D + E = 180, along with the relations.
So, let's expand it through substitution.
4x - 16 + 6x - 1 + 4x - 13 = 180
We can also group the terms using the commutative property, making this a lot easier to look at:
14x - 30 = 180
Now, we solve a single-variable equation.
14x = 210
7x = 105
x = 15
Now, let's plug this value of x back into the equation for angle C.
C = 4x - 16
C = 4*15 - 16
C = 60 - 16
C = 44
Thus, angle C has a measure of 44 degrees.
And guest, I like the fact that you didn't give the answer right away but instead gave a hint to solve the problem, that's better than a number of other guest posts I've seen on here as answers :D