1. anonymous

2. AbdullahM

Hint: $$\bf\Large\frac{ a}{b }\times \frac{ c}{d }=\frac {ac}{bd}$$

3. anonymous

do you know how to multiply fractions ?

4. anonymous

Yes.

5. anonymous

so what are you confused about ? The signs ?

6. anonymous

Yes very

7. AbdullahM

Negative number multiplied by a negative number equals to a positive number.

8. anonymous

when multiplying/dividing with signs... if the signs are different, then the answer is negative. if the signs are the same, the answer is positive

9. anonymous

Thanks a lot! :0

10. anonymous

but don't get these rules mixed up for when you are adding/subtracting with signs.....because these have a different set of rules

11. anonymous

Ohh, okay.

12. AbdullahM

$$\bf\large -a\times -b =(-1)(a) \times (-1)(b) =(1 )(a)(b) =ab$$

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