Answer:
x = 15
Step-by-step explanation:
4x + 2 + 58 + 60 = 180
4x + 120 = 180
4x = 60
=> (4x+2)°+60°+58° = 180° { angle sum property }
=> 4x+2+118 = 180
=> 4x +120 = 180
=> 4x = 180-120
=> x = 60/4
=> x = 15
