In fig 90 AOB is a straight line and they ray of stands on it the value of x is
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(b) 26
Since AOB is a straight line ,
- < AOC + < BOC = 180
- (2x + 15 ) + (3x + 35) = 180
- 5x + 50 = 180
- 5x = 130
- x = 26
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