document.write( "Question 181379: Use Subtraction to solve each system of equations.If the system does not have exactly one solutions, state whether it has no solution or infinitely many solutions. 2x+3y=1 & -3x+y=15 \n" ); document.write( "
Algebra.Com's Answer #136073 by HyperBrain(694)\"\" \"About 
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Using the equation -3x+y=15, we have:
\n" ); document.write( "y=3x+15
\n" ); document.write( "+++
\n" ); document.write( "Substituting this to 2x+3y=1,
\n" ); document.write( "2x+3(3x+15)=1
\n" ); document.write( "2x+(9x+45)=1
\n" ); document.write( "11x+45=1
\n" ); document.write( "11x=-44
\n" ); document.write( "x=-4
\n" ); document.write( "+++
\n" ); document.write( "Solving for y,
\n" ); document.write( "y=3(-4)+15=-12+15=3
\n" ); document.write( "+++
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\n" ); document.write( "HyperBrain!
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