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Mathematics 19 Online
OpenStudy (anonymous):

angle ABD andBDC are supplementary ABD=12x-12 and BDC=3x+48

OpenStudy (bibby):

supplementary angles add up to 180 degrees

OpenStudy (anonymous):

so how do I set the equation up to solve it

OpenStudy (bibby):

you know that ABD+BDC=180

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