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OpenStudy (anonymous):
Given ABCD, solve for x.
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OpenStudy (zale101):
is there a pic of the figure?
OpenStudy (anonymous):
OpenStudy (zale101):
well, add the two equations together
OpenStudy (zale101):
(30+5x) +(15+10x)=180 it equals to 180 because it's a straight line
OpenStudy (anonymous):
X=9?
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OpenStudy (zale101):
how did you got that?
OpenStudy (anonymous):
30+5x + 15+10x=180 45+15x=180 45-45 +15x=180-45 15x=135 15x/15=135/15 X=9
OpenStudy (zale101):
seems correct
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