i have the answer so i just wanted to check..here we go
5+10/x-1=-5/x-1
these is 8th grade quesion
2006-12-06 05:42:44 · 4 answers · asked by sara 2 in Science & Mathematics ➔ Mathematics
Multiply through by x to get rid of denominators so 5x+10-x=-5-x
Combine like terms 4x+10=-5-x
Move like terms to one side
5x=-15 so x=-3 should work.
Unless of course, you forgot to use parenthesis so if the "real" problem is 5+10/(x-1)=-5/(x-1) then multiply through by x-1 to get
5(x-1)+10=-5
5x-5+10=-5
5x+5=-5
5x=-10
x=-2
2006-12-06 05:54:43 · answer #1 · answered by Professor Maddie 4 · 1⤊ 0⤋
Porportional Problem
Multiply the means
Multiply the extremes
5 + 10x / x - 1 = 5 / x - 1
The means are 5(x - 1)
The extrement are 5 + 10x(x - 1)
5(x - 1) = (5 + 10x)(x - 1)
Multiplying the right side of the equation
(5 + 10x)(x - 1)= 5x + 10x² - 5 - 10x = 10x² - 5x - 5
5x - 5 = 10x² - 5x - 5
5x - 5 - 5x = 10x² - 5x - 5 - 5x
- 5 = 10x² - 10x - 5
- 5 + 5 = 10x² - 10x - 5 + 5
0 = 10x² - 10x
0 = 10x (x - 1)
- - - - - - -s-
2006-12-06 15:51:42 · answer #2 · answered by SAMUEL D 7 · 0⤊ 1⤋
-2
2006-12-06 13:49:20 · answer #3 · answered by Hermione 3 · 0⤊ 1⤋
x= -3
am i right
2006-12-06 13:52:13 · answer #4 · answered by Anonymous · 0⤊ 1⤋