document.write( "Question 350240: sum of 2 numbers is twice their difference. if one of the numbers is 10, the other number is what? \n" ); document.write( "
Algebra.Com's Answer #250344 by ewatrrr(24785)\"\" \"About 
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Hi,
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\n" ); document.write( "*Note: Let n be the unknown number
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\n" ); document.write( "Write as You read
\n" ); document.write( "10 + n = 2*(n-10)
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\n" ); document.write( "Simplify and solve
\n" ); document.write( "10 + n = 2n -20
\n" ); document.write( "10+20= n
\n" ); document.write( "n = 30
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\n" ); document.write( "check your answer
\n" ); document.write( "10+30 = 2*(30-10) = 40
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