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

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Answer 1 · 2018-05-07T22:01:35

#x = 17.5#

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.

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

#10x + 5 = 180#

#10x = 180 - 5#

#10x = 175#

#x = 175/10#

#x = 17.5#