Question

In the adjoining figure, AOB is a straight line. Find the value of x.​

Answer 1

Answer:

x = 40°

Step-by-step explanation:

Since, AOB is a straight line

angle AOB will be 180°

Therefore,

(3x+10)° + (2x-30)° = 180°

3x+10° + 2x-30° = 180°

5x -20° = 180°

5x = 180°+20°

x = 200/5

x = 40°

Answer 2

Step-by-step explanation:

(3x +10)+(2x-30) = 180 ( angles on a straight line are supplementry)

3x +10 +2x-30 =180

5x-20 =180

5x = 200

x=200/5

x=40

3x+10 = 130

2x-30=50