Seudónimo
Seudónimo
30-01-2018
Mathematics
contestada
please help thanks very much
Respuesta :
choixongdong
choixongdong
30-01-2018
x/(x+5) = (x-2)/(x+1)
x(x+1) = (x -2) (x + 5)
x^2 + x = x^2 - 2x + 5x - 10
x = 3x - 10
3x - x = 10
2x = 10
x = 5
answer is A
5
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