nemy2
nemy2
04-09-2016
Mathematics
contestada
(X + 1)/7 =5/(x - 1)
Respuesta :
tinmann
tinmann
04-09-2016
ok so
(x+1)/7 = 5/(x-1)
5(x+1)/7 = 35/7(x-1)
5x+5/35 = 35/7x-7
5/35 = 35/2x - 7
7 = 35/2x-7
14x - 49 = 35
14x = 84
x = 6
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