document.write( "Question 413525: solve by using substitution
\n" ); document.write( "x+y=10
\n" ); document.write( "y=x+8 \n" ); document.write( "

Algebra.Com's Answer #290177 by MathLover1(20850) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( " $\"x%2By=10\"$ ..........1
\n" ); document.write( " $\"y=x%2B8\"$ ...........2....substitute $\"y\"$ in 1\r
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\n" ); document.write( "\n" ); document.write( " $\"x%2By=10\"$ ..........1\r
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\n" ); document.write( "\n" ); document.write( " $\"x%2Bx%2B8=10\"$ .\r
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\n" ); document.write( "\n" ); document.write( " $\"2x=10-8\"$ .\r
\n" ); document.write( "\n" ); document.write( " $\"2x=2\"$ .\r
\n" ); document.write( "\n" ); document.write( " $\"x=2%2F2\"$ ...\r
\n" ); document.write( "\n" ); document.write( " $\"x=1\"$ ....now sub. in 2 and find $\"y\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"y=x%2B8\"$ ...........2.\r
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\n" ); document.write( "\n" ); document.write( " $\"y=1%2B8\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"y=9\"$ ..\r
\n" ); document.write( "\n" ); document.write( "so, your solutions are: $\"x=1\"$ and $\"y=9\"$ \r
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