say it has 5x over 3 and then on the other side it says 3x over 7. how the heck do u do that mess? i know like if it says 8 over x and then 3 over 2 u do 8 times 2 divided by 3 but what about x's on both sides like that?
2006-10-10 08:09:19 · 8 answers · asked by charmed_one2188 1 in Science & Mathematics ➔ Mathematics
I am assuming 5x/3 = 3x/7.
You do basically the same thing and cross multiply. So 5x(7)=3x(3). 35x = 9x Then divide both by 9 and 35/9 = x
2006-10-10 08:17:39 · answer #1 · answered by Anonymous · 0⤊ 1⤋
I don't think I have ever seen a ratio an proportion problem like that.That would be 5x/3=3x/7. Cross multiplying would yield 9/x=35x.Combining like terms makes the equation 26x=0. Dividing through by 26 results in 0 for an answer.
2006-10-10 15:33:49 · answer #2 · answered by Max 6 · 0⤊ 0⤋
look for the LCD : first , then multiply the denominator by the LCD and what evr is left over from the lcd multiply it to the numerator for example: 1/2x = 3/4x, the LCD would be 4x because the numerators could go into that # .
2x would go into 4x : 2 times therefore, take the number (2) and multiply it to the numerator from the first fraction; there would be no denominator and u could then work without fractions
after that u do the same with the other side 4x could go into 4x: one time so u multiply the number with the numerator 1(3) which would equal three.
u do the same procedure no matter where the variable is.
2006-10-10 15:21:03 · answer #3 · answered by Anonymous · 0⤊ 0⤋
5x/3 is exactly the same as x * (5/3 )
5x/3 = 3x/7 => 7*5x/3 = 3x => 7*5x = 3*3x => x = 0.
2006-10-10 15:18:17 · answer #4 · answered by gjmb1960 7 · 0⤊ 1⤋
5x/3 = 3x/7
What you have is (5/3)x = (3/7)x; or ax = bx. OR
(a-b)x = 0.
Either a-b = 0 or x = 0.
a-b is not 0, so x = 0
2006-10-10 15:15:13 · answer #5 · answered by bequalming 5 · 0⤊ 1⤋
5x/3=3x/7
multiply both sides by 21
5*7x=3*3x
35x=9x
x must =0
2006-10-10 15:32:42 · answer #6 · answered by yupchagee 7 · 0⤊ 0⤋
Zero
2006-10-10 15:30:31 · answer #7 · answered by Anonymous · 0⤊ 0⤋
you won't be able to solve for x, you'll get a ratio
2006-10-10 15:16:56 · answer #8 · answered by fleisch 4 · 0⤊ 1⤋