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Two angles with measurements (5x+7) and (15x-7) are supplementary. what’s the value of x
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4 votes
Two angles with measurements (5x+7) and (15x-7) are supplementary. what’s the value of x

User Herdsman
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1 Answer

5 votes
They add up to 180 degrees.

5x+7+15x-7=180

20x=180

x=9
User Raegan
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