Pls refer to the pic above for question.Thanks in advance!
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let _/x/(1-x) be u
thus u+1/u=13/6
=>(u^2+1)6=13u
=>6u^2-13u+6=0
=>u=(13+-_/169-144)/12=(13+-5)/12
=>u=18/12 or 8/12
=>u=3/2 or 2/3
thus x/1-x=9/4 or 4/9
=>4x=9-9x or 9x=4-4x
=>x=9/13 or 4/13
thus u+1/u=13/6
=>(u^2+1)6=13u
=>6u^2-13u+6=0
=>u=(13+-_/169-144)/12=(13+-5)/12
=>u=18/12 or 8/12
=>u=3/2 or 2/3
thus x/1-x=9/4 or 4/9
=>4x=9-9x or 9x=4-4x
=>x=9/13 or 4/13
TheMandy:
I didn't get what you did in the 3rd step. Can you pls elaborate?
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