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I want to know how to solve equations with variables on both sides.

2006-10-17 12:17:47 · 15 answers · asked by THe Learner 1 in Education & Reference Homework Help

15 answers

8X-4=12x
8x -8x -4 = 12x-8x (do to each side equally, to rid the 8x do a subtraction)
-4=4x (after removing the -8x)
-4/4=4x/4 (do to each side equally, to rid the 4 from the x since it is multiplied, do the opposite)
-1=x

2006-10-17 12:22:03 · answer #1 · answered by cowboys21angel 4 · 0 1

In any algebraic expression you could desire to pass letters on one area and numbers on the different. a million. 8x + 4 = 7 - 4x upload the two aspects by using 4x 12x + 4 = 7 subtract the two aspects by using 4 12 x = 3 Divide the two aspects by using 12 x = 3/12 = a million/4 = 0.25 2. 5(2x - 3) = 50 distribute 5 decrease back out 10x - 15 = 50 upload 15 to the two aspects 10x = sixty 5 divide the two aspects by using 10 x = sixty 5/10 = 6.5

2016-10-19 21:52:28 · answer #2 · answered by Anonymous · 0 0

You must first place the variable on one side by moving it. What you do to one side must be done to the other side to balance it out. In this example take -8x to both sides. that will leave you with -4=4xflip that around for 4x = -4, it is still equal and easier to read that way. You should see that -1 is the answer. To check this answer write out the original problem but replace each x with (-1). 8(-1)-4=12(-1) from there you get - 8 - 4= -12 from there you get -12 = -12 since this statement is obviously true you have your answer, and you know its correct.

2006-10-17 12:28:51 · answer #3 · answered by chios78 4 · 0 1

8x-4=12x
take the 8x to the other side of the equation by subtracting it from both sides
8x-4-8x=12x-8x
that'll give you -4=4x and you can solve a one variable equation

2006-10-17 12:20:52 · answer #4 · answered by Anonymous · 0 1

The key to solving this type of algebra problem is to change your equation so that like terms are on the same side of the equation.

8x-4=12x
You can always do the same operation to both sides of the equation, so subtract 8x from both sides.
then,
(8x-4)-8x=12x-8x
-4=4x
Divide both sides by 4 to get
-1=x
Do whatever is necessary to get all the x's on the same side.
Hope this helps.

2006-10-17 12:25:10 · answer #5 · answered by True Blue 6 · 0 1

Since both variables are the same you can take 8x and subtract it from both sides getting -4=4x
then divide by 4 getting x=-1

2006-10-17 12:22:05 · answer #6 · answered by Anonymous · 0 1

You have to try to get rid of the second variable.
8x - 4 = 12x
-8x -8x
-4 = 4x
/4 /4
-1 = x

I think this is the answer

2006-10-17 12:22:57 · answer #7 · answered by The Answer 2 · 0 1

8x-4=12x
first u add 8x to 12x because u want to get rid of
1 x and find the value of the other
and u always bring the small number to the larger one
ur left with
-4=4x
divide each side with
4 to get the value of x
ur answer then is
x=-1
hope this helps

2006-10-17 12:30:53 · answer #8 · answered by Anonymous · 0 0

x= -1

2006-10-17 12:19:49 · answer #9 · answered by nothingplaying 2 · 0 1

x=-1

2006-10-17 12:21:13 · answer #10 · answered by 523 1 · 0 1

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