Question

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

Answer 1

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

Answer 2

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

Answer 3

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

Answer 4

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

Answer 5

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