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Step-by-step explanation:
angle 1 + 70° = 180° ( linear pair )
angle 1 = 180-70
= 110°
angle 2 + 60° = 180°. ( linear pair )
angle 2 = 180-60
= 120°
angle 1 + angle 2 + x + x + 30 = 540°. ( angle sum property of pentagon )
110 + 120 + x + x + 30 = 540
260 + 2x = 540
2x = 540 - 260
2x = 280
x = 280/2
x = 140°