i havent done this in so long but i think the answer is 3.75
[tex]\frac{5}{12} - \frac{3}{10}[/tex]
[tex]\frac{5}{12} + \frac{10}{3}[/tex]
[tex]\frac{10}{3} x 4 = \frac{40}{12}[/tex]
[tex]\frac{5}{12} + \frac{40}{12} = \frac{45}{12}[/tex]
45 ÷ 12 = 3.75
