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-81/625 / 243/3125

Guest Nov 7, 2017
 #1
avatar+7155 
+1

[ -81 / 625 ] / [ 243 / 3125 ]

                                                     Invert the second fraction and multiply.

=   [ -81 / 625 ] * [ 3125 / 243 ]

 

=   [ -81 * 3125 ] / [ 625 * 243 ]

 

=   -253125 / 151875

 

=   -5/3

 

≈   -1.667

hectictar  Nov 7, 2017
 #2
avatar+87564 
+2

[-81 / 625]   /   [243 / 3125]    =

 

[-81 / 625 ]  *  [ 3125 / 243 ]          swap denominators

            

[-81 / 243 ]  *  [ 3125  / 625 ] 

 

[ -81 / ( 81 * 3 ) ]  *  [  (625 * 5)  / 625 ]

 

[  -1 / 3 ] *  [ 5 / 1 ]  =

 

-5 / 3

 

 

cool cool cool

CPhill  Nov 7, 2017

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