document.write( "Question 88039: could you help to solve this problem and show in a equation \r
\n" ); document.write( "\n" ); document.write( ". One number is 8 more than another. If the sum of the smaller
\n" ); document.write( "number and twice the larger number is 46, find the two numbers.\r
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Algebra.Com's Answer #63930 by bucky(2189)\"\" \"About 
You can put this solution on YOUR website!
When you read the problem, it becomes apparent that you need to find a small number and a
\n" ); document.write( "larger number. For ease of understanding and identification, call the Small number S and the
\n" ); document.write( "Larger number L.
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\n" ); document.write( "The first sentence tells you that one number is 8 more than another. If it is 8 more, then
\n" ); document.write( "this means that it is L. So you should get the idea that if you take 8 away from L then you
\n" ); document.write( "should have S. You can write this as:
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\n" ); document.write( "L - 8 = S
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\n" ); document.write( "or by adding 8 to both sides, it may be clearer to you as S + 8 = L. Either one is OK to use.
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\n" ); document.write( "The second sentence tells you that the sum of the Small number (S) and twice the Larger number
\n" ); document.write( "(2*L) equals 46. Writing this in equation form gives you:
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\n" ); document.write( "S + 2L = 46 <- call this the second equation
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\n" ); document.write( "Then, from the first equations you can either use the fact that S = L - 8 or that L = S + 8
\n" ); document.write( "and substitute into the second equation. For ease, let's use S = L - 8 and so we can replace
\n" ); document.write( "S in the second equation with L - 8 to get:
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\n" ); document.write( "L - 8 + 2L = 46
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\n" ); document.write( "Next you can get rid of the -8 on the left side by adding 8 to both sides. When you do
\n" ); document.write( "this addition you get:
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\n" ); document.write( "L + 2L = 54
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\n" ); document.write( "Add the terms on the left side and the equation reduces to:
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\n" ); document.write( "3L = 54
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\n" ); document.write( "Finally divide both sides by 3 to reduce the equation and solve for L:
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\n" ); document.write( "L = 54/3 = 18
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\n" ); document.write( "Now you know that L = 18 you can solve for S. You know that L is 8 larger than the smaller
\n" ); document.write( "number S. So you can subtract 8 from L and you have S. Therefore, L - 8 = 18 - 8 = 10. Therefore,
\n" ); document.write( "S is 10.
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\n" ); document.write( "So the two numbers are 10 and 18.
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\n" ); document.write( "Obviously the larger number is 8 more than the smaller number. Then check further by
\n" ); document.write( "adding the smaller number to twice the larger. If you do you get 10 + 2*18 and this becomes
\n" ); document.write( "10 + 36 and this equals 46, just as the problem says it should.
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\n" ); document.write( "Hope this helps you to understand the problem and how to solve it.
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