Question 1132402
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If  x + y = {{{(x+y)^5 / (x+z)^7}}},  then  (canceling the factors (x+y) in both sides)


1 = {{{(x+y)^4 / (x+z)^7}}}     and, hence,


{{{(x+z)^7 / (x+y)^2}}} = {{{(x+y)^2}}}.       <U>ANSWER</U>
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