-4/5 times (-3/8).=?

Question

multiply

Answer 1

Hi,

-4.....-3
---.x.----- =
.5.......8

12
---- which reduces to
40

3
--- <== answer
10

Remember you can also reduce fractions by reducing a number in the numerator with a number in the denominator. In this case we can divide 4 and 8 both by 4.

-4.....-3
---.x.----- =
.5.......8

-1.....-3........3
---.x.----- = ---- <== same answer as the other way
.5.......2.......10

I hope this helps!! :-)

Answer 2

When you are multiplying fractions, you are just multiplying across. It is not like with addition and subtraction where you have to find a common denominator.


(-4/5) * (-3/8) = (-4*-3)/(5*8) = 12/40


your answer is 12/40.. but you must simplify. What I like doing to simplify is to prime factor the numerator and demoninator.

so 12 is equal to 2 * 2 * 3 ( or the bottom most 'branches' )
and 40 is equal to 2 * 2 * 2 * 5 (again, the bottom most 'branches')

so we can rewrite 12/40.. into

2 * 2 * 3/2 * 2 * 2 * 5 or (2)(2)(3)/(2)(2)(2)(5)

Now all you have to do is 'cross-out' the numbers that are present on the top and bottom.. (remember, 2/2 is 1).

So there are two 2's on top, and three 2's on the bottom. But you can only cross out two on top and two on bottom. because there is NO other 2 on the top to compensate for the bottom 2.

Your left with 3 / (2*5). So your answer is 3/10.

Answer 3

any negative fraction is constituted as a whole negative, which is easier to see if you look at it in decimal form. -4/5ths for example, is the same as -0.8. Negatives times negatives produces positives.
3/8ths is the same as 3x0.125 = 0.375 x 0.8. In fraction form, this looks like
4x3 / 5x8 = 12/40. Reduced is 6/20, reduced is 3/10.

Answer 4

12/40 which simplified is 3/10

Answer 5

- 4/5 * - 3/8
12/40
3/10

Answer: 3/10

Answer 6

-4/5(-3/8)=+3/10ANS.

Answer 7

Do your own damn homework.