Thank you
2007-09-30 14:55:36 · 9 answers · asked by Damaris 1 in Science & Mathematics ➔ Mathematics
9 - x = 2x (added 1 to each side)
9 = 3x (added x to each side)
3 = x (divided by 3 to each side)
x = 3 (symmetric property of equality)
2007-09-30 14:58:00 · answer #1 · answered by lhvinny 7 · 0⤊ 0⤋
X=3
2007-09-30 21:58:53 · answer #2 · answered by Sherlock Holmes 2 · 0⤊ 0⤋
8-x = 2x - 1
First you need to add/subtract the proper amounts to get all the x's on their own side...
(8+1)-x = 2x -1 +1
9-x = 2x
9-x+x = 2x +x
Then you just need to divide both sides by the number in front of the x.
9 = 3x
(9/3) = (3/3)x
x = 3
2007-09-30 22:01:14 · answer #3 · answered by kinger7102 2 · 0⤊ 0⤋
8-x = 2x -1
8 -x +x = 2x +x -1
8 = 3x -1
8 + 1 = 3x -1 +1
9 = 3x
9/3 = 3x/3
3 = x
2007-09-30 21:59:13 · answer #4 · answered by God 2 · 0⤊ 0⤋
8-x=2x-1
+1 +1
9-x=2x
+x +x
9=3x
/3 /3
3=x
2007-09-30 22:00:30 · answer #5 · answered by ? 6 · 0⤊ 0⤋
The answer is x=3. When solving get all the x on one side.
8-x=2x-1
9-x=2x
9=2x+x
9=3x
9/3=x
x=3
2007-09-30 22:03:21 · answer #6 · answered by dawance88 2 · 0⤊ 0⤋
Add the x over to the right
Add the 1 over to the left
9=3x
divide by 3
x=3
2007-09-30 21:58:56 · answer #7 · answered by ? 3 · 0⤊ 0⤋
8-x=2x-1
We want +1x all by itself
Add +x to both sides of the equation.(We're allowed to do this, just so long as what we do to one side of the equation we also do to the other side.)
8-x+x=2x-1+x
8=3x-1
Add 1 to both sides
8+1=3x-1+1
9=3x
Divide both sides by 3
3=x
That's all there is to it!
2007-09-30 22:02:44 · answer #8 · answered by Grampedo 7 · 0⤊ 0⤋
8-x=2x-1
8+1-x+x=2x-1+1+x
9=3x
x=3
2007-09-30 22:00:00 · answer #9 · answered by Anonymous · 0⤊ 0⤋