I don't understand how to solve this but I know it = 180?

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1 Answer
May 7, 2018

x = 17.5

Explanation:

Since you know that all of the angles in a triangle have to sum to 180 degrees, start by making an equation.

(5x) + (3x) + (2x + 5) = 180

Then, solve for x.

  1. combine like terms

color(red)(5x + 3x + 2x) + 5 = 180

10x + 5 = 180

  1. isolate x

10x = 180 - 5

10x = 175

x = 175/10

x = 17.5