when 6 is subtracted from 5 times a certain number,the result is the same as when 4 is added to 3 times that number.Find the number.
2007-02-05 07:47:38 · 5 answers · asked by ~*PrInCeSs*~ 2 in Science & Mathematics ➔ Mathematics
5x-6=3x+4
2x=10
x=5
2007-02-05 07:52:34 · answer #1 · answered by jnjn 2 · 1⤊ 0⤋
Let the number be x
5x - 6 = 3x + 4
2x = 10
x = 5
The number is 5
Subtracting 6 from 5 times the number = 25 - 6 = 19
Adding 4 to three times the number = 15 + 4 = 19
2007-02-05 07:50:40 · answer #2 · answered by Tom :: Athier than Thou 6 · 1⤊ 0⤋
5x - 6 = 3x + 4
Therefore bring 3x over to the other side and subtract from 5x = 2x.The bring -6 over to the other side so, 6 + 4 = 10.
now we have 2x= 10 divide 2x by 2 and 10 by 2 = 5.
Therefore X=5 : So now to check: 5 x 5 - 6 = 19
3 x 5 + 4 = 19
Yay! it works..
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2007-02-05 07:59:18 · answer #3 · answered by Miss LaStrange 5 · 0⤊ 0⤋
let x be the unknown number
5x -6 = 3x+4
2x=10
x=5
2007-02-05 07:52:51 · answer #4 · answered by bignose68 4 · 1⤊ 0⤋
So, set up the equation:
5X-6=3X-4
Subtract 3X from both sides:
2X-6=-4
Add six to both sides:
2x=2
Therefore, X=1
2007-02-05 07:53:24 · answer #5 · answered by Anonymous · 0⤊ 1⤋