document.write( "Question 967876: the sum of two numbers is 21. the smaller number is three more than half the larger number. find the solution by writing and solving a system of equations algebraically. \n" ); document.write( "
Algebra.Com's Answer #591570 by macston(5194)\"\" \"About 
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\n" ); document.write( "x and y are the two numbers.
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\n" ); document.write( "\"x%2By=21\"
\n" ); document.write( "\"x=21-y\" Use this to substitute for x below.
\n" ); document.write( "\"x=%281%2F2%29y%2B3\" Substitute for x from above.
\n" ); document.write( "\"21-y=%281%2F2%29y%2B3\" Add y to each side.
\n" ); document.write( "\"21=1.5y%2B3\" Subtract 3 from each side.
\n" ); document.write( "\"18=1.5y\" Divide each side by 1.5.
\n" ); document.write( "\"12=y\" ANSWER 1: The larger number is 12.
\n" ); document.write( "\"x=21-y\"=\"21-12=9\" ANSWER 2: The smaller number is 9.\r
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