2006-06-26 02:31:00 · 22 answers · asked by avfc1 1 in Science & Mathematics ➔ Mathematics
Rearrange the equation so that the variable (in this case x) appear on one side and rest on the other.
3x + 4 = 9 - 2x
3x+2x +4 = 9-2x+2x [adding 2x to both sides]
5x + 4 = 9
5x +4-4 = 9-4 [subtracting 4 from both sides]
5x = 5
5x /5 = 5/5 [deviding both sides by 5]
x = 1
2006-06-26 02:35:43 · answer #1 · answered by organicchem 5 · 0⤊ 0⤋
3x + 4 = 9 - 2x
3x + 2x = 9 - 4
5x = 5
x = 5/5
x = 1
2006-06-26 18:26:01 · answer #2 · answered by Kemmy 6 · 0⤊ 0⤋
3x + 4 = 9 - 2x
5x = 5
x = 1
2006-06-26 10:01:30 · answer #3 · answered by Anonymous · 0⤊ 0⤋
3x + 4 = 9 - 2x
3x + 2x = 9 - 4
5x = 5
x = 1
2006-06-26 09:36:38 · answer #4 · answered by JeckJeck 5 · 0⤊ 0⤋
3x+4-4 = 9-4-2x
3x=5-2x
3x+2x=5-2x+2x
5x=5
x=1
2006-06-26 09:35:08 · answer #5 · answered by Jenn 3 · 0⤊ 0⤋
3x + 4 = 9 - 2x
5x = 5
x = 1
2006-06-26 09:33:58 · answer #6 · answered by csucdartgirl 7 · 0⤊ 0⤋
Subtract 4 from both sides:
3x = 5 - 2x
Add 2x to both sides
5x = 5
Divide both sides by 5
x = 1
2006-06-26 09:35:00 · answer #7 · answered by Dan in Boston 4 · 0⤊ 0⤋
You need to get numbers on one side, and x's on the other.
each time you move one from one side of the equals to the otherside, you change it's sign around to be opposite,. e.g. move the + 4 to the other side, change the sign to the opposite of a plus, i.e. minus, this leaves 3x = 9 -2x -4, now move the -2x to the otherside, and change it to be the opposite sign again, this leave 3x +2x = 9 - 4, or in other words 5x = 5, therefore x = 1
2006-06-26 09:38:53 · answer #8 · answered by spiegy2000 6 · 0⤊ 0⤋
3x +4 = 9 -2x
+2x +2x >>>>combine like terms
____________
5x +4= 9
-4 -4
__________
5x=5 >>>>divide each side by 5 to get variable by itself
5 5
x=1
2006-06-26 09:38:09 · answer #9 · answered by Jill 4 · 0⤊ 0⤋
x = 1
3x +4 +2x = 9 -2x + 2x
5x +4 = 9
5x +4 -4 = 9 -4
5x = 5
x = 1
2006-06-26 09:34:48 · answer #10 · answered by thunder2sys 7 · 0⤊ 0⤋