Find the unknown measures in the triangle

Question

The angles of the triangle are (9x+4) and (3x-2), i need to find the third angle measure.

Answer 1

(9x+4) and (3x-2)

180 - (9x + 4) - (3x - 2) = y

y is the measure of the third angle.

You can simplify and combine terms, but not solve because you have two unknowns and just one equation.

180 - (9x + 4) - (3x - 2) = y

180 - 9x - 4 - 3x + 2 = y

178 - 12x = y