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How do I find the value of x for which line a is parallel to line b?

How do I find the value of x for which line a is parallel to line b?-example-1
User Ilw
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1 Answer

1 vote

Answer:

x = 20

Explanation:

3x + 6x = 180, if you make them supplementary then they will be parallel

9x = 180

x = 20

User Payedimaunt
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