You may want to review reducing fractions first.

You can multiply two fractions by multiplying their numerators
and their denominators. For example, if you have to multiply
1 ⁄ 2 by 5 ⁄ 3, you
multiply the numerators (1 and 5) to get 5 and the denominators (2
and 3) to get 6. The answer is then 5 ⁄ 6. The
rule for signs is the same as for whole numbers; if one fraction
is negative, then the answer is also negative. If *both*
are negative, though, then the answer is *positive*. (Of
course, if neither is negative, then the answer is also
positive.)

Again, remember that a whole number is just a fraction with denominator 1. So, if you have to multiply 1 ⁄ 5 by −2, you can rewrite −2 as −2 ⁄ 1. Then you multiply the numerators (1 and 2) to get 2 and the denominators (5 and 1) to get 5. Since one fraction was negative, the answer is also negative, so you write −2 ⁄ 5.

Be sure to reduce your answers! If you get the answer
−2 ⁄ 6, say, you should divide the
numerator and denominator by 2 and write
−1 ⁄ 3 for your answer. Your teacher may
or may not take off points for this — I generally give half
credit — but when you get to harder problems then you'll
have to do lots of steps. You're less likely to make a mistake on
the next step if you have something simple to work with (like
−1 ⁄ 3) instead of something complicated
(like −2 ⁄ 6). In
general, *always* reduce fractions if you can.