Q. 54.7( 13 Votes )

# In the adjoining figure, what value of x will make AOB, a straight line?

X=28°

AOB is a straight line

Therefore, AOB = 180°

(3x +20)° + (4x -36)° = 180°

3x + 20° + 4x - 36° = 180°

7x - 16° = 180°

7x = 196°

x = 28°

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