how to u multiply 2 fractions one being a negative one being a positive

Question

waheguru · Answer

tell me steps plz

anonymous · Answer

multiply across and the result will be negative

anonymous · Answer

here are examples: 1/2*-1/4=-1/8. positive times negative gives negative. -1/2*-1/4=1/8. negative times negative gives positive

chaise · Answer

You need to either make the denominator the same by multiplying top and bottom of the equation so there is a common denominator. If you are unable to do this you cross multiply. 

$$a/b+c/d = (ad+bc)/bd$$

anonymous · Answer

$$\frac{-a}{b}*\frac{c}{d}=\frac{-ac}{bd}$$

waheguru · Answer

so whenever there is one negative fraction times a positive fractin the answer has 2 be negative?

anonymous · Answer

2/3 * -4/5
-8/15

chaise · Answer

Yes, whenever there is one negative multiplied with a positive the answer will ALWAYS be negative.

waheguru · Answer

thxx soo much