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how do i solve equations with rational coefficients?

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3/8r=15/16

Mar 29th, 2015

Turn 3/8 upside down to get 8/3

Multiply both sides by 8/3, which is the reciprocal of 3/8)

8/3 * 3/8 * r = 8/3 * 15/16

(8/3 *3/8)r = 5/2  ( 15 divided by 3 is 5 at the top and 16 divided by 8 is 2 at the bottom)

           1 r = 5/2   ( 8 and 8 cancel off and 3 and 3 cancel off )

        r = 5/2 or 2.5

Mar 29th, 2015

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Mar 29th, 2015

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