document.write( "Question 573123: Five times the sum of a number and eleven is fifteen. \n" ); document.write( "
Algebra.Com's Answer #368686 by mathsmiles(68)\"\" \"About 
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Lets use X for the number we're looking for. \r
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\n" ); document.write( "\n" ); document.write( "5 times the sum ... means we need to figure the sum first and then multiply by 5.
\n" ); document.write( "So,
\n" ); document.write( "the sum of X and 11 is X + 11\r
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\n" ); document.write( "\n" ); document.write( "Take 5 times that ...
\n" ); document.write( "5 (X + 11) \r
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\n" ); document.write( "\n" ); document.write( "is 15. Means equals 15.
\n" ); document.write( "5 (X + 11) = 15\r
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\n" ); document.write( "\n" ); document.write( "Multiplying out ...
\n" ); document.write( "5X + 55 = 15
\n" ); document.write( "Subtracting 55 from each side ...
\n" ); document.write( "5X = 15 - 55 = -40
\n" ); document.write( "5X = -40
\n" ); document.write( "Dividing each side by 5 ...
\n" ); document.write( "X = -8\r
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\n" ); document.write( "\n" ); document.write( "Checking:
\n" ); document.write( "5 times the sum of -8 and 11 is 15.
\n" ); document.write( "5 times (-8+11) is 15
\n" ); document.write( "5 times 3 is 15
\n" ); document.write( "15 = 15 Correct!
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