let x is the number
12x + 8 = 10x
12x - 10x = -8
2x = -8
x = -8/2
x = -4
2007-08-12 16:41:14
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answer #1
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answered by ning 1
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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
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answer #2
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answered by zero_max12 2
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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
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answer #3
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answered by ? 3
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Let number be x
12x + 8 = 10x
2x = - 8
x = - 4
2007-08-13 05:36:24
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answer #4
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answered by Como 7
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12x + 8 = 10x
2007-08-12 23:33:38
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answer #5
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answered by Jewels 7
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"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
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answer #6
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answered by devilsadvocate1728 6
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12x + 8 = 10x.
2007-08-12 23:31:41
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answer #7
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answered by Anonymous
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12x + 8 = 10x
2x = -8
x = -4
2007-08-12 23:35:25
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answer #8
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answered by Anonymous
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Let x be the number
8 + 12x = 10x
2x = - 8
x = - 4
2007-08-12 23:32:27
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answer #9
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answered by vlee1225 6
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12x+8=10x
2x+8=0
2x=-8
x=-4
2007-08-12 23:36:01
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answer #10
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answered by Anonymous
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