Question

two angles are supplementary and the larger 20degree less than three times the smaller. find the angle

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Answer 1

Answer:

let smaller angle be x°

so then the larger angle is 3x+20 °

then we form an equation

like this

3x°+20° + x° = 180°

4x° = 100°

x = 50°

then bigger angle = 130°

smaller angle = 50°