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the sum of four angles about a point is 360degree.the measure of the 2nd angle is 6degreemore than 3times the 1st,the measure of the 3rd is 3degree more than twice the first,the measure of the 4th is 20 degree less than the 3rd.what is the measure of each angle?

Since this is algebra, do you know what algebraic equations you should be writing out and solving for?

math algebra, rhodora, meir ~ Switching names won't get answers for you any faster, as Reiny has already told you.

And when any student wants a "fast answer," it's often assumed he/she is taking a test and just wants the answers.

Please answer Leo's question if you want further help from math tutors. And quit switching names.

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