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I don't even know where to begin. Help
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I don't even know where to begin. Help

I don't even know where to begin. Help-example-1
User Igx
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1 Answer

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<CAD+<CDA=90
2x-y+x-1=90
3x-y=91
<CBD+<CDB=90
2x+3+y-2=90
2x+y=89
then
3x-y=91
2x+y=89
5x=180
x=36
y=17
<CDA=35
<CDB=15

User KlsLondon
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