Question

If (3x +40°) and (x -20°) are supplementary angles. Find X.








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Answer 1

Answer:

Brainly User. 2x-40+x+10=180( sum of supplementary angles is 180). 3x-30=180. 3x=180-30. 3x=150. x=150/3. x=50. if you find it useful ...

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Step-by-step explanation:

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Answer 2

Answer:

X=160°

Step-by-step explanation:

3x+40°+ x-20°=180

3x-x=180°-40°+20°

2x=160°

x=160°/2

x=80°

It is 100% correct. Please mark me as Brainlist