document.write( "Question 659815: Solve 2x + 5y= 16
\n" ); document.write( " y= x - 1\r
\n" ); document.write( "\n" ); document.write( "Using Substitution, Then verify your solution graphically.
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Algebra.Com's Answer #410932 by MathLover1(20850) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( " $\"+2x+%2B+5y=+16+\"$ ......1\r
\n" ); document.write( "\n" ); document.write( " $\"y=+x+-+1\"$ ............2
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\n" ); document.write( "\n" ); document.write( " $\"+2x+%2B+5y=+16+\"$ ......1...substitute $\"y\"$ from 2\r
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\n" ); document.write( "\n" ); document.write( " $\"+2x+%2B+5%28x+-+1%29=+16+\"$ ....solve for $\"x\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"+2x+%2B+5x+-+5=+16+\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"+7x=+16%2B5+\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"+7x=+21+\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"+x=+21%2F7+\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"highlight%28+x=+3%29\"$ \r
\n" ); document.write( "\n" ); document.write( "now find $\"y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=+x+-+1\"$ ............2\r
\n" ); document.write( "\n" ); document.write( " $\"y=+3+-+1\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"highlight%28y=+2%29\"$ \r
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\n" ); document.write( "\n" ); document.write( "check:\r
\n" ); document.write( "\n" ); document.write( " $\"+2x+%2B+5y=+16+\"$ ......1\r
\n" ); document.write( "\n" ); document.write( " $\"+2%2A3+%2B+5%2A2=+16+\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"+6+%2B+10=+16+\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"+16=+16+\"$ .........which verifies our solution\r
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\n" ); document.write( "\n" ); document.write( " $\"y=+x+-+1\"$ ............2\r
\n" ); document.write( "\n" ); document.write( " $\"2=+3+-+1\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"2=+2\"$ ........which verifies our solution\r
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