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geiselucid
@geiselucid
October 2020
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ALGUÉM PODE RESOLVER,POR FAVOR?! OBRIGADA!!
O VALOR DE X QUE TORNA VERDADEIRA A IGUALDADE É :
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dariodias
2x - (x + 2)/7 = 2/3 - x
(14x -x - 2)/7 = 2/3 -x
(13x -2)/7 = (2 - 3x)/3
3(13x - 2) = 7(2 - 3x)
39x - 6 = 14 - 21x
60x = 14 +6
x = 20/60
x = 1/3
2 votes
Thanks 7
geiselucid
Obrigada Dário!!
Heberwagner
2x - [(x+2)/7] = 2/3 - x
2x - (x+2)/7 = (2-3x)/3
(14x - x - 2)/7 = (2 - 3x)/3
3(14x - x - 2) = 7(2 - 3x)
42x-3x-6=14-21x
42x-3x+21x = 14 + 6
60x = 20 => x = 20/60 =>
x = 1/3
1 votes
Thanks 3
geiselucid
Obrigada pela ajuda!!
geiselucid
: )
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Lista de comentários
(14x -x - 2)/7 = 2/3 -x
(13x -2)/7 = (2 - 3x)/3
3(13x - 2) = 7(2 - 3x)
39x - 6 = 14 - 21x
60x = 14 +6
x = 20/60
x = 1/3
2x - (x+2)/7 = (2-3x)/3
(14x - x - 2)/7 = (2 - 3x)/3
3(14x - x - 2) = 7(2 - 3x)
42x-3x-6=14-21x
42x-3x+21x = 14 + 6
60x = 20 => x = 20/60 => x = 1/3