You might have taken the time to share that these expressions represent the interior angles of a triangle. We shouldn't have to waste our time trying to figure out what you want or need.
The sum of the measures of the interior angles of any triangle is . Add the three expressions and set the sum equal to 180.
Solve for , then calculate , , and . Don't round until you do the final three calculations.
John
My calculator said it, I believe it, that settles it