Mathematics 45 Online
OpenStudy (anonymous):

A nail 3 3/4 long is driven into a board 2 1/6 inche thick. I know you need to subtract but how

OpenStudy (anonymous):

$3\tfrac{3}{4}=\frac{15}{4}$ and $2\tfrac{1}{6}=\frac{13}{6}$

OpenStudy (anonymous):

use lcd of 12 to get $\frac{15}{4}=\frac{45}{12}$ and $\frac{13}{6}=\frac{23}{12}$ and subtract in the numeratore

OpenStudy (anonymous):

i get $\frac{45}{12}-\frac{23}{12}=\frac{22}{12}=\frac{11}{6}$

OpenStudy (anonymous):

except i am wrong because $\frac{13}{6}=\frac{26}{12}$

OpenStudy (anonymous):

so it is really $\frac{45-26}{12}=\frac{19}{12}$

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