Question

Find the value of x. 3x, 2x, 55

Answer 1

The sum of the measures of the angles in a triangle is 180°.

Therefore we have the equation:

2x° + 3x° + 55° = 180°

5x° + 55° = 180° subtract 55° from both sides

5x° = 125° divdie both sides by 5

x° = 25°

Answer: x = 25