document.write( "Question 1051522: Isaiah has 7.15 in dimes and nickels. He has a total of 91 coins
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Algebra.Com's Answer #666997 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! x=dimes \n" ); document.write( "y=nickels \n" ); document.write( "x+y=91; that is a count of the coins. \n" ); document.write( ".10x+.05y=7.15; this is a count of the money \n" ); document.write( "multiply the bottom by -20, to make the second term -1 y, because then we can eliminate y \n" ); document.write( "-2x-y=-143.0 \n" ); document.write( "-x=-52 \n" ); document.write( "y=52 dimes or $5.20 \n" ); document.write( "x=39 nickels or $1.95 \n" ); document.write( "They sum to $7.15. \n" ); document.write( " |