Answer:
x = 24
Step-by-step explanation:
The angles of a triangle added together equal 180⁰. Set up a simple equation to solve for x.
90⁰ + 42⁰ + (2x)⁰ = 180⁰
90 + 42 = 132
2x = 180 - 132
2x = 48
2x + 42 + 90 = 180
2x + 132 = 180
48/2 = x
Have a nice day!
