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How do I answer r/4=(r+7)/6

 Sep 14, 2017
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How do I answer r/4=(r+7)/6

 

Good morning Guest!

 

\(\color{red}\frac{r}{4}=\frac{r+7}{6}\\ 6r=4(r+7)\\ 6r=4r+28\\ 6r-4r=28\\ 2r=28\)           \(\times 6\ \rightarrow\times 4\\ multiply\\ -4r\\ subtract\\ divide\ by\ 2\)

\(r=14\)

 

\(\frac{14}{4}=\frac{14+7}{6}\\ \frac{14}{4}=\frac{21}{6}\\ 14\times 6=21\times 4\\ 84=84\)

laugh  !

 Sep 14, 2017

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