Posted by **Sara** on Wednesday, December 21, 2016 at 2:42am.

what do I do when there is an equation like 15/4 divided by 9/1 how do I do that since 9 cant go into 15 evenly

- elementary school -
**Bosnian**, Wednesday, December 21, 2016 at 2:54am
( 15 / 4 ) / ( 9 / 1 ) =

15 * 1 / ( 4 * 9 ) =

15 / 36 = 3 * 5 / ( 3 * 12 ) = 5 / 12

15 / 4 divided by 9 / 1 = 5 / 12

- elementary school -
**bobpursley**, Wednesday, December 21, 2016 at 3:44am
Remember this:

division is the reciprocal of multiplication, "IS" means equal, or the same.

15/4 divided by 9/1 equals 15/4*1/9

= 15/36 and that can be reduced

=3*5/3*12=5/12

a/b divided by c/d= a/b * d/c =ad/cb

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