• if its addition and subtraction you have to make the denominator the same and you have to make it equavelent too.  $\frac {-6}/{-4}$
• tug of war $\frac {-5}+{9}$
• we learned how to divide and multiply fractions together, for divsion u make it into a reciprocal fraction and you multiply. for multiplication you can just multiply straight across. Divion= $\frac {-5}{8}\div\frac{5}{3}$