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I need help with this question-example-1
User Efi MK
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9514 1404 393

Answer:

x = 22, y = 123

Explanation:

The sum of angles in a triangle is 180°.

(2x +13)° +57° +3x° = 180°

5x +70 = 180 . . . . . . . . . . . . . collect terms, divde by °

5x = 110 . . . . . . . . . . . subtract 70

x = 22 . . . . . . . . divide by 5

__

Angles in a linear pair are supplementary.

y° + 57° = 180°

y = 123 . . . . . . . . divide by °, subtract 57

User Lee Goodrich
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