First, convert to an improper fraction ([tex]a\frac{b}{c} = \frac{ac+b}{c}[/tex]
Next, find common denominator and multiply.
Finally, subtract.
[tex]3\frac{1}{3} - 2\frac{1}{4}\\=\frac{3*3+1}{3} - \frac{2*4+1}{4}\\\frac{10}{3} - \frac{9}{4}[/tex]
[tex]\frac{10*4}{3*4} - \frac{9*3}{4*3}\\=\frac{40}{12} - \frac{27}{12}\\\frac{13}{12} = 1\frac{1}{12}[/tex]
The anser is 1 1/12, or 13/12
