SOLUTION: How do i find x when the angles for my triangle are 2x, 3x, 4x. i am stumped i can get the answer i just don't know how to i know x=20 but not sure how to show my work.

SOLUTION: How do i find x when the angles for my triangle are 2x, 3x, 4x. i am stumped i can get the answer i just don't know how to i know x=20 but not sure how to show my work.

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Question 460714: How do i find x when the angles for my triangle are 2x, 3x, 4x. i am stumped i can get the answer i just don't know how to i know x=20 but not sure how to show my work.
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
2x+3x+4x=180
9x=180
x=20
2x=40
3x=60
4x=80
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