document.write( "Question 946957: .5x + y = 9
\n" ); document.write( "1.6x + 0.2y = 13
\n" ); document.write( "to solve this equation, use subsitution \n" ); document.write( "

Algebra.Com's Answer #577714 by MathLover1(20850) $\"\"$ $\"About$

You can put this solution on YOUR website!

\n" ); document.write( " $\".5x+%2B+y+=+9+\"$ ..........eq.
\n" ); document.write( " $\"1.6x+%2B+0.2y+=+13\"$ ......eq.2
\n" ); document.write( "---------------------\r
\n" ); document.write( "\n" ); document.write( " $\".5x+%2B+y+=+9+\"$ solve for $\"y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"+y+=+9-.5x+\"$ ....substitute in eq.2\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"1.6x+%2B+0.2%289-.5x%29+=+13\"$ ......eq.2 solve for $\"x\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"1.6x+%2B+1.8-0.1x+=+13\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"1.6x-0.1x+=+13-1.8\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"1.5x+=+11.2\"$ ...multiply by $\"10\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"15x+=+112\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x+=+112%2F15\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x+=+7.466666666666667\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x+=+7.5\"$ \r
\n" ); document.write( "\n" ); document.write( "go to $\"+y+=+9-.5x+\"$ , substitute $\"7.5\"$ for $\"x\"$ and solve for $\"y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"+y+=+9-.5%2A7.5+\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"+y+=+9-3.75+\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"+y+=+5.25+\"$ \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );