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OpenStudy (anonymous):
Solve the proportion 47/39 =b/2
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OpenStudy (anonymous):
(2)(47) = b(39)
OpenStudy (mayankdevnani):
\[\huge \frac{47}{39}=\frac{b}{2}\] do cross multiply, \[\huge 94=39b\] \[\huge b=\frac{39}{94}\]
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