Question

Find the value of x.

Answer 1

57 degrees

Explanation:

The sum of the interior angles of a quadrilateral add to 360.

123 + 71 +x + 2x -5 = 360 Combine like terms

189 + 3x = 360 Subtract 189 from both sides

3x = 171 Divide both sides by 3

x = 57