Please tell me how to do this.
2007-09-21 13:49:55 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
8x-5=12x+1
8x-5+5=12x+1+5[Adding 5 to both sides]
8x=12x-4
8x-12x=12x+6-12x[subtracting 12x from both sides]
-4x= 6
-4x/-4=6/-4[dividing both sides by -4]
x= -3/2 or -1 1/2
2007-09-21 14:10:48 · answer #1 · answered by alpha 7 · 0⤊ 0⤋
Just put numbers to the same side:
8x -12x = 1+5 ==> -4x = 6 ==> x = 6/-4 or x = -3/2
2007-09-21 13:57:45 · answer #2 · answered by vahucel 6 · 0⤊ 0⤋
8x – 5 = 12x + 1
This is solved by collecting terms together. So, let's add 5 to each side of the equation:
8x - 5 + 5 = 12x + 1 + 5
8x = 12x + 6
Now, lest subtract 12x from each side:
8x - 12x = 12x + 6 - 12x
-4x = 6
Now, let's divide both sides by -4
(-4x) / -4 = 6 / (-4)
x = -3/2
HTH
Charles
2007-09-21 13:57:22 · answer #3 · answered by Charles 6 · 0⤊ 0⤋
You want to get the all the Xs on one side so:
8x-8x-5 = 12x-8x+1
This simplifies to:
-5 = 4x + 1
Then subtract 1 from each side so you can solve for x:
-5-1 = 4x +1 -1
This simplifies to:
-6 = 4x
Divide by four on each sides so that you get only x:
-6/4 = (4x)/4
This simplifies to:
-6/4 = x which simplifies to -3/2 = x
Hope that helps!
2007-09-21 14:02:28 · answer #4 · answered by bookwormplanet 1 · 0⤊ 0⤋
8x - 5 = 12x +1
8x = 12x + 6
-4x = 6
x = - 3/2
2007-09-21 13:58:29 · answer #5 · answered by chocolatelvr 4 · 0⤊ 0⤋
8x-5=12x+1
+5 +5
8x= 12x +6
-12x -12x
-4x=6
x= -3/2
2007-09-21 14:02:44 · answer #6 · answered by Anonymous · 0⤊ 1⤋
subtract 8x and 1 from each side of the equation (to collect s on one side and numbers on the other)
-6 = 4x
-6/4 = x
x = -1.5
2007-09-21 13:57:04 · answer #7 · answered by rosie recipe 7 · 0⤊ 0⤋
- 6 = 4 x
x = - 6 / 4
x = - 3 / 2
2007-09-21 23:15:57 · answer #8 · answered by Como 7 · 2⤊ 0⤋