document.write( "Question 943856: this is a question of solving a system of equations with substitution,\r
\n" ); document.write( "\n" ); document.write( "x+y=24
\n" ); document.write( "y=7x \n" ); document.write( "

Algebra.Com's Answer #575485 by MathLover1(20850) $\"\"$ $\"About$

You can put this solution on YOUR website!

\n" ); document.write( " $\"x%2By=24\"$ ...eq.1
\n" ); document.write( " $\"y=7x\"$ .....eq.2
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\n" ); document.write( "\n" ); document.write( " $\"x%2By=24\"$ ...eq.1 substitute $\"7x\"$ for $\"y\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x%2B7x=24\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"8x=24\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x=24%2F8\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"highlight%28x=3%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"y=7x\"$ .....eq.2 substitute $\"3\"$ for $\"x\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"y=7%2A3\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"highlight%28y=21%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+30%2C+7x%2C+-x%2B24%29+\"$ \r
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