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OpenStudy (anonymous):
What is the value for x in the proportion x over x plus ten equals seven over twelve ?
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sam (.sam.):
\[\frac{x}{x+10}=\frac{7}{12}\]
OpenStudy (anonymous):
so what stands for x ?
sam (.sam.):
14
OpenStudy (anonymous):
x/ (x+10) =7/ 12 Cross product: 12x = 7x + 70 ->5x = 70 => x = 70/5 = 14
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