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12 answers

let x is the number
12x + 8 = 10x
12x - 10x = -8
2x = -8
x = -8/2
x = -4

2007-08-12 16:41:14 · answer #1 · answered by ning 1 · 1 0

Do this problem step by step.

First represent the number as x.

The problem states: 8 more than 12 times a number.

12 times a number is 12x

8 more than this is:

12x + 8

10 times the same number would be 10x. These two parts of the problem are equal, so write an equation:

12x + 8 = 10x

Now, you can solve for x by subtracting 10x from both sides and combining like terms:

12x + 8 - 10x = 10x - 10x

2x + 8 = 0

Subtract 8 from both sides:

2x = -8

Finally, Divide by 2 on both sides to solve for x:

x = -4

Hope this helps!

2007-08-13 00:03:11 · answer #2 · answered by zero_max12 2 · 0 0

Hi Hplover et alia,

This problem can be confusing to many people. Here's how to solve the problem:

Always do the multiplication and division first. On the left hand side, we have "12 times a number". We can let x represent that number. So, "12 times a number" is 12·x. Next, we have "8 more", so we add 8 to 12·x to give us

12·x + 8 on the left hand side.

The verb "is" can be set to "equals" or "=". "10 times that same number" is equivalant to "10·x".

So, our equation looks like this:

12·x + 8 = 10·x

Although you didn't ask, we'll solve for x. Subtract 12 ·x from both sides of the equation (remember that what you do to one side of a equation, you have to do to the other side) gives us

8 = -2·x

Dividing by -2 gives us x = -4

I hope this helps.

James :-)

2007-08-13 00:06:53 · answer #3 · answered by ? 3 · 0 1

Let number be x
12x + 8 = 10x
2x = - 8
x = - 4

2007-08-13 05:36:24 · answer #4 · answered by Como 7 · 1 0

12x + 8 = 10x

2007-08-12 23:33:38 · answer #5 · answered by Jewels 7 · 1 0

"8 more than..." --> ... + 8
"...12 times..." --> 12*... + 8
"...a number..." --> 12x + 8
"...is..." --> 12x + 8 = ...
"...10 times..." --> 12x + 8 = 10*...
"...that same number." --> 12x + 8 = 10x

I didn't actually solve this equation; the problem doesn't ask for that.

2007-08-12 23:59:41 · answer #6 · answered by devilsadvocate1728 6 · 0 0

12x + 8 = 10x.

2007-08-12 23:31:41 · answer #7 · answered by Anonymous · 1 0

12x + 8 = 10x

2x = -8

x = -4

2007-08-12 23:35:25 · answer #8 · answered by Anonymous · 0 0

Let x be the number
8 + 12x = 10x
2x = - 8
x = - 4

2007-08-12 23:32:27 · answer #9 · answered by vlee1225 6 · 0 1

12x+8=10x

2x+8=0

2x=-8

x=-4

2007-08-12 23:36:01 · answer #10 · answered by Anonymous · 0 0

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