document.write( "Question 455326: Solve the system using the substitution method. If the system has no solution or an infinite number of solutions, state this.\r
\n" ); document.write( "\n" ); document.write( "-0.7x -0.1y= -15
\n" ); document.write( "0.4x +0.1y= 0.6
\n" ); document.write( "

Algebra.Com's Answer #312616 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
-0.7x -0.1y = -15
\n" ); document.write( "0.4x +0.1y = 0.6 --> 0.1y = 0.6 - 0.4x
\n" ); document.write( "Sub for 0.1y in the 1st eqn
\n" ); document.write( "---------
\n" ); document.write( "-0.7x - (0.6-0.4x) = -15
\n" ); document.write( "-0.7x - 0.6 + 0.4x = -15
\n" ); document.write( "-0.3x - 0.6 = -15
\n" ); document.write( "3x + 6 = 150
\n" ); document.write( "x = 48
\n" ); document.write( "------
\n" ); document.write( "0.1y = 0.6 - 0.4x
\n" ); document.write( "y = 6 - 4x
\n" ); document.write( "y = -186
\n" ); document.write( "
\n" ); document.write( "
\n" );