Explanation:
the sum of all the angles is 180° as it is a straight line.
so,
n + 6 + 90 + 2n + 3 = 180
3n + 99 = 180
3n = 180 - 99 = 81
n = 81/3 = 27
n = 27°
therefore, value of n is 27°.
hope this helps you !
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