Please can you tell what to do step by step
2006-06-11 06:02:14 · 7 answers · asked by Suj 2 in Science & Mathematics ➔ Mathematics
Can you show me on this equation what to do
2006-06-11 06:06:33 · update #1
I assume the equation is:
4/(x+3) = 6/(4-x)
First cross multiply (denominator on left to numerator on right and denominator right to numerator on left)
4(4-x) = 6(x+3)
16-4x = 6x+18
Combine like terms, x's on one side, numbers on the other
16-18 = 6x+4x
-2 = 10x
Divide both sides by 10 to isolate the x
-2/10 = 10x/10
-2/10 = x
-1/5 = x
That's it! Have fun!
2006-06-11 07:11:27 · answer #1 · answered by bvroeg 2 · 2⤊ 0⤋
I assume you don´t intend to use brackets, so I´ll go along with the question as you´ve stated it.
4/x + 3 = 6/4 - x = 3/2 -x
=> x + 4/x = 3/2 - 3 = -3/2
=> x² +(3/2)x + 4 = 0
=> x = (-3 +/- sqrt(55)*i)/4
2006-06-12 04:32:47 · answer #2 · answered by Dhrishtadyumna 1 · 0⤊ 0⤋
1. Cross multiply.
2. Isolate x.
3. Solve for x.
We can't do any more if you don't tell us exactly what's in the denominator. Is it 4/x or 4/(x+3)?
2006-06-11 06:04:57 · answer #3 · answered by Baseball Fanatic 5 · 0⤊ 0⤋
4/X + 3 = 6/4 - X
4/X + 3 = 3/2 -X
(x 2X) Highest common factor
8 + 6X = 3X - 2XX
(XX = X to the square)
move 2XX and 3X to the otherside where the negative sign change to positve, positive change to negative)
2XX + 6X - 3X + 8 = 0
2XX + 3X + 8 = 0
You will be unable to find the values of X as the line isn't a quadratic equation
2006-06-12 05:53:34 · answer #4 · answered by neha 1 1 · 0⤊ 0⤋
4/(x+3) = 6/(4-x)
4(4-x) = 6(x+3)
16 - 4x = 6x + 18
16 - 18 = 6x + 4x
-2 = 10x
x = -2 / 10
x = -1/5 or -0/2
2006-06-11 14:15:56 · answer #5 · answered by Kemmy 6 · 0⤊ 0⤋
by cross multiplication:
16-4x=6x+18
10x=-2
x=.2
2006-06-13 03:50:57 · answer #6 · answered by watermelon 2 · 0⤊ 0⤋
get a fancy calculator
or ask on yahoo answers
2006-06-11 06:07:48 · answer #7 · answered by Anonymous · 0⤊ 0⤋