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x = 8
As it is a straight line,
(7x + 84)° + (5x)° = 180°
12x + 84 = 180
12x = 180-84 = 96
x = 96/12
x = 8
Answered by
1
Answer:
x=8
Step-by-step explanation:
7x + 84° + 5x = 180° (linear pair angle)
12x +84° = 180°
12x = 180-84
12x = 96
x = 96/12
x = 8
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