document.write( "Question 665824: 5x+y=22
\n" ); document.write( "4x-4y=8
\n" ); document.write( "solve by substitution \n" ); document.write( "

Algebra.Com's Answer #414099 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( " $\"5x%2By=22\"$ .....1
\n" ); document.write( " $\"4x-4y=8\"$ ......2
\n" ); document.write( "______________________\r
\n" ); document.write( "\n" ); document.write( " $\"5x%2By=22\"$ .....1..solve for $\"y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=-5x%2B22\"$ ...plug it in 2\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " $\"4x-4%28-5x%2B22%29=8\"$ ......2.solve for $\"x\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"4x%2B20x-88=8\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"24x=8%2B88\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"24x=96\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=96%2F24\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"highlight%28x=4%29\"$ \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "now find $\"y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=-5x%2B22\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=-5%2A4%2B22\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=-20%2B22\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"highlight%28y=2%29\"$ \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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