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3 votes
Find the value of x.

Find the value of x.-example-1
User Dpeacock
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The value of X
X = -2.4
User Amirreza Nasiri
by
8.9k points
1 vote

So you know that all the angles in a triangle must add up to 180. Therefore, you can make this equation:


(-20x+3)+(-40x+18)+(-15x+9)=180

And now just solve for x!


-75x+30=180\\-75x=160\\x=(160)/(-75)\\x=-2.4

So, your answer is:

x = -2.4

User OrangeAlmondSoap
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