2007-08-12 08:28:18 · 20 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
-2x + 5 = 4x - 7
- 5 - 5
-2x = 4x - 12
-4x -4x
____ ___
-6x = -12
__ ___
-6 -6
x = 2
2007-08-12 08:35:55 · answer #1 · answered by Jewels 7 · 0⤊ 0⤋
-2x + 5 = 4x - 7 place numbers on one area and xs' on the different 7+5=4x+2x be conscious: signs and warning signs replaced whilst moved to the otherside 12=6x in basic terms been further jointly 12/6=x 12 is divided by ability of 6 2=x consistently stick to the comparable steps
2016-10-10 01:55:50 · answer #2 · answered by Anonymous · 0⤊ 0⤋
-2x + 5 = 4x - 7 add 2x to both sides and +7 to get:
-2x + 2x +5 +7 = 4x + 2x +7 -7
combine like terms and cancel what equals to 0 to get:
6x = 12
divide both sides by 6 to get:
x=2
2007-08-12 08:35:54 · answer #3 · answered by 037 G 6 · 0⤊ 0⤋
-2x + 5 = 4x -7
+2x +2x (x's on left side cancel out)
5 = 6x -7
+7 +7 (numbers (7, in this case) on right cancel out)
12 = 6x
12/6 = 6/6 x (divide each side by 6, thus freeing the variable)
2 = x
2007-08-12 08:34:14 · answer #4 · answered by xo_pina_colada_ox 2 · 0⤊ 0⤋
-2x +5 = 4x -7
+2x +2x
5 =6x - 7
+7 +7
12 = 6 x
12 / 6 = 2
x = 2
2007-08-12 08:34:04 · answer #5 · answered by Anonymous · 0⤊ 0⤋
- 2x + 5 = 4x - 7
5 + 7 = 4x + 2x
12 = 6x
x = 12 / 6
x = 2
Answer: x is 2.
Proof:
- 2(2) + 5 = 4(2) - 7
- 4 + 5 = 8 - 7
1 = 1
2007-08-16 02:44:50 · answer #6 · answered by Jun Agruda 7 · 3⤊ 0⤋
-2x + 5 = 4x - 7
5+7= 12
-2x+12=4x
2x+4x= 6x
12 = 6x
12/6 = 2
x=2
2007-08-12 08:32:38 · answer #7 · answered by Carlos F 3 · 0⤊ 0⤋
-2x + 5 = 4x -7
-2x= 4x -7 -5
-2x=4x -12
-2x -4x = -12
-6x = -12
x=2
or
-2x + 5 = 4x -7
5 = 2x + 4x -7
5 = 6x -7
5 + 7 = 6x
12 = 6x
x= 12/6
x=2
2007-08-12 08:35:40 · answer #8 · answered by Hassan M 3 · 0⤊ 0⤋
By transposition, in the given equation, we get,
7+5 = 4x+2x,
or 12 = 6x.
Thus, dividing both sides by 6, we get,
2 = x,
or, x = 2 (answer)
NICE WAY TO AWARD 2 POINTS! JUST LOOK FOR YOURSELF !
EVEN THE ANSWER TO YOUR QUESTION IS, x = 2 !
:)
2007-08-12 08:37:19 · answer #9 · answered by Sam 7 · 0⤊ 0⤋
Add 2x to both sides
5 = 6x - 7
Add 7 to both sides
12 = 6x
Divide both sides by 6
2 = x
x= 2
2007-08-12 08:33:48 · answer #10 · answered by John S2005 3 · 0⤊ 0⤋