21-09-2016
Mathematics

contestada

Solve the equation. -4/x+1 = -1/x+5

a. -19/4
b. 1/3
c. -19/3
d. 2

Respuesta :

texaschic101 texaschic101

21-09-2016

-4/(x + 1) = -1/(x + 5)
this is a proportion so we cross multiply
-1(x + 1) = -4(x + 5)
-x - 1 = -4x - 20
-x + 4x = -20 + 1
3x = -19
x = -19/3

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