Question

Find the value of x in each figure : (i) 2x + 30° 3x - 20°​

Answer 1

x=10

Step-by-step explanation:

[2x+3x] (-20-30)

=-x-10

cancel minus with minus

x = 10

Answer 2

Since the angles are vertically opposite, they are equal,

2x + 30 = 3x - 20

x = 50°

In figure (ii),

Since the angles are linear paired, they sum up to 180°,

3x - 10 + 2x - 20 = 180

5x = 210

x = 42°