10-13/x=4+5/x?

1 ⤊

2007-11-20 23:49:57 · 3 answers · asked by Ariel B 1 in Science & Mathematics ➔ Mathematics

3 answers

10x - 13 = 4x + 5
6x = 18
x = 3

2007-11-21 02:31:41 · answer #1 · answered by Como 7 · 1⤊ 1⤋

10-13/x=4+5/x?
get the LCD: then,
(10x - 13)/x = (4x + 5)/x

cross multiply:
10x^2 - 13x = 4x^2 + 5x

simplify:
6x^2 - 18x = 0

common factor:
6x(x - 3) = 0

of you're looking for the roots,... the answers are:
x = 3

and

x = 0

2007-11-21 07:56:06 · answer #2 · answered by windzard 2 · 0⤊ 1⤋

10-13/x=4+5/x
10-4=13/x+5/x
6=18/x
x=18/6
x=3

That was the question?

2007-11-21 07:54:09 · answer #3 · answered by Anonymous · 0⤊ 0⤋