Question

girls answer should be 140°
Please give me the equation​

Answer 1

the adjacent angle of 70° makes linear pair with it.

so the angle = 180 - 70 = 110°

similarly, the adjacent angle of 60° = 180 - 60 = 120°

now the figure is Pentagon

sum of all the angles of a Pentagon = 540°

110 + 120 + x + x + 30 = 540

2x + 260 = 540

2x = 540 - 260

2x = 280

x = 280/2

x = 140°