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

Two angles with measurements (5x+7) and (15x-7) are supplementary. what’s the value of x
asked 60.7k views
4 votes
Two angles with measurements (5x+7) and (15x-7) are supplementary. what’s the value of x

asked
User Herdsman
by
8.3k points

1 Answer

5 votes
They add up to 180 degrees.

5x+7+15x-7=180

20x=180

x=9
answered
User Raegan
by
8.6k points
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