The measures of the angles of a triangle are shown in the figure above. Solve for X

Answer:
16
Step-by-step explanation:
Sum of all angles of triangle = 180
30 + 90 + 4x - 4 = 180
30 +90 - 4 + 4x = 180
116 + 4x = 180
Subtract 116 form both sides
4x = 180 - 116
4x = 64
Divide both sides by 4
x = 64/4
x = 16