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Question
Fractions involving 3 parts (2 I can do).
Solve equation for a
x  +   y  +  z  = 1
-      -     -
a      b     c
That is x over a plus y over b plus z over c equals 1. Put in form of a=

Answer
Ray~
   Multiply both sides by a and you will get: x +(ay/b) + (az/c) = a. Now subtract (ay/b) and (az/c) so that they are on the same side of the equation as a getting a- ay/b -ax/c = x. Factor a out getting a(1-y/b -x/c) = x. Divide both sides by (1-y/b - z/c) getting a = x/(1-y/b - z/c).

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