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OpenStudy (anonymous):
what is cross multiplication useful for
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OpenStudy (anonymous):
When you solve proportions. For example\[\frac{ 4 }{5}=\frac{ x }{ 25 }\]
OpenStudy (anonymous):
You can solve for x by changing the fractions to 100=5x
OpenStudy (anonymous):
I got it but thank you I over read my self
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