document.write( "Question 198899: 5r-6s=21
\n" ); document.write( "6r+5s=74\r
\n" ); document.write( "\n" ); document.write( "Please help solve
\n" ); document.write( "Answer: Solve for r and substitute
\n" ); document.write( "5r-6s=21
\n" ); document.write( "r=21-5s/5
\n" ); document.write( "substitute
\n" ); document.write( "5(21-5s/5)-6s=21
\n" ); document.write( "105-25s/5-6s=21
\n" ); document.write( "-5s-6s=21-105
\n" ); document.write( "-11s=-84
\n" ); document.write( "s=84/11\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
Algebra.Com's Answer #149382 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
5r-6s=21
\n" ); document.write( "6r+5s=74\r
\n" ); document.write( "\n" ); document.write( "---------------
\n" ); document.write( "Multiply thru the 1st by 5 and the 2nd by 6 to get:
\n" ); document.write( "25r - 30s = 105
\n" ); document.write( "36r + 30s = 444
\n" ); document.write( "---------------------
\n" ); document.write( "Add to get:
\n" ); document.write( "61r = 549
\n" ); document.write( "r = 9
\n" ); document.write( "--------------
\n" ); document.write( "Substitute to solve for \"s\":
\n" ); document.write( "5*9 -6s = 21
\n" ); document.write( "45 -6s = 21
\n" ); document.write( "-6s = -24
\n" ); document.write( "s = 6
\n" ); document.write( "===================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( " \n" ); document.write( "
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