3. The figure, given alongside, shows two adjacent angles AOB
and AOC whose exterior sides are along the same straight
line. Find the value of x.
68°
3x - 20
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Step-by-step explanation:
68+(3x-20)=180°(angles on a straight line are supplementry)
48+3x=180
3x=180-48
3x=132
x=132/3
x=44
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