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# Solve math help?

Update:

How do I setup an equation?

Update 2:

How'd you get 20?

### 3 Answers

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- Anonymous5 years agoFavorite Answer
Line CD makes a straight angle (180°)

Therefore 3x+40+2x=180°

5x+40=180

5x=140

x=28°

Now m ang AEC = 3x+40

so putting the value of x ...3(28)+40=124°

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- ThomasLv 75 years ago
3x+40+2x=180

5x+40=180

5x=140

x=28 making AEC or 3x+40 become:

3(28)+40=124 (and AED=2x become 56)

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