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Barbaraerescov
@Barbaraerescov
April 2020
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X-1/x+1 -2/5 = 2x/5x+5
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Yanmize
x-1/x+1 -2/5 = 2x/5x+5, tira o mmc ( que no caso será 5x+5 )
={[(5)(x-1)]-[(x+1)(2)]}/(5x+5)= 2x/(5x+5)=
=5x-5-2x-2=2x
= 3x-7= 2x
=
x = 7
1 votes
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={[(5)(x-1)]-[(x+1)(2)]}/(5x+5)= 2x/(5x+5)=
=5x-5-2x-2=2x
= 3x-7= 2x
= x = 7