document.write( "Question 309875: .05x+.25y=11 and .15x+.05y=-12 \n" ); document.write( "
Algebra.Com's Answer #221635 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
.05x+.25y=11
\n" ); document.write( ".15x+.05y=-12
\n" ); document.write( "--------------------
\n" ); document.write( "Multiply thru both equations by 100.
\n" ); document.write( "--------------------
\n" ); document.write( "5x + 25y = 1100
\n" ); document.write( "15x + 5y = -1200
\n" ); document.write( "-----------------------
\n" ); document.write( "Multiply thru the 1st equation by 3:
\n" ); document.write( "15x + 75y = 3300
\n" ); document.write( "15x + 5y = -1200
\n" ); document.write( "-------------------
\n" ); document.write( "Substract the 2nd from the 1st:
\n" ); document.write( "70y = 4500
\n" ); document.write( "y = 64.29
\n" ); document.write( "------
\n" ); document.write( "Substitute into 5x + 25y = 1100
\n" ); document.write( "5x + 25*64.29 = 1100
\n" ); document.write( "5x = -507.14
\n" ); document.write( "x = -101.42
\n" ); document.write( "==============
\n" ); document.write( "Check in 15x+5y = -1200
\n" ); document.write( "15(-101.42) + 5(64.29) = -1199.85
\n" ); document.write( "Answers check.
\n" ); document.write( "================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( " \n" ); document.write( "
\n" );