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Answer:

2x+20 + x+40 = 180

Step-by-step explanation:

The angles are supplementary so they add to 180

2x+20 + x+40 = 180

Answer:

( 2 x + 20 )° + ( x +40 )° = 180°

Step-by-step explanation:

  • They both angles are on straight line so , its supplementary angles and we know that sum of angles of supplementary angle is 180°.

( 2 x + 20 )° + ( x +40 )° = 180°

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