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How do I find the value of x

How do I find the value of x-example-1
User Marthe
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2 Answers

4 votes
(5x + 10) = (4x - 10)

9x = 0

x = 0
User Venkataraman R
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7.6k points
2 votes
5x+10 and 4x-10 are consecutive angles, therefore:

(5x+10)+(4x-10)=180

Combine like terms:

9x=180
9x/x=180/9
X=20
User Nispio
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6.5k points