Answer:
x= 20
Explanation:
Both angles form a linear pair = 180 o
6x+60 = 180
6x = 120
x = 20
6x20 +60 = 180
120 +60 = 180
A straight line is 180° , so if you subtract 60 from 180 you get 120, and you divide 120 by 6 so the answer is 20
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