In the ()..this is a fraction
2x-1
____
x+ 2
need help!
2007-12-02 08:41:49 · 8 answers · asked by Dixie 1 in Science & Mathematics ➔ Mathematics
1/4 = 3 - (2x - 1) / (x + 2)
x + 2 = (3)(4)(x + 2) - 4(2x - 1)
x + 2 = 12x + 24 - 8x + 4
x + 2 = 4x + 28
- 26 = 3x
x = - 26 / 3
2007-12-03 03:33:47 · answer #1 · answered by Como 7 · 1⤊ 1⤋
Move the three to the LHS.
1/4 -3 = -(2x-1)/(x+2)
collect terms on lhs
-11/4 = -(2x-1)/(x+2)
Eliminate Fractions
-11(x+2) = -4(2x-1)
Expand
-11x-22 =-8x +4
collect x's on left, constants on right.
-11x + 8x = 22 + 4
-3 x = 26
x = -26/3
x = - 8 2/3
Check answer by substituting x = -8.66666 (done off camera) It is indeed correct.
2007-12-02 16:51:33 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The solution for 1/4=3-((2x-1)/(x+2)) goes as follows:
(1/4)-3=-(2x-1)/(x+2)
-11/4=-(2x-1)/(x+2)
11/4*(x+2)=2x-1
(11/4)x+11/2+1=2x
13/2=(8/4)x-x(11/4)=-(3/4)x
x=-(13/2)/(3/4)=-(13/2)*(4/3)=-26/3=-8.666...=-(8 and 2/3)
2007-12-02 17:05:49 · answer #3 · answered by Nati F 3 · 0⤊ 1⤋
x= - 26/3
2007-12-02 16:45:53 · answer #4 · answered by SomeGuy 2 · 0⤊ 1⤋
start by multiplyig everything by four
2007-12-02 16:44:25 · answer #5 · answered by Awesome guy 2 · 0⤊ 0⤋
....1
1 ---- = x
....9
and yeah i know it is right. plug it in and see for yourself
2007-12-02 16:48:31 · answer #6 · answered by clggirl234 2 · 0⤊ 1⤋
-1.5=x
=)
2007-12-02 16:45:36 · answer #7 · answered by Anonymous · 0⤊ 0⤋
idk but i think its 1/4=1
____
x+2
but i think its wrong. idk
2007-12-02 16:46:46 · answer #8 · answered by actresswantabe44 2 · 0⤊ 0⤋