document.write( "Question 884456: solve by substitution 7x+5y=-20
\n" ); document.write( " x=1-2y \n" ); document.write( "

Algebra.Com's Answer #534338 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+7x%2B5y=-20\"$
\n" ); document.write( " $\"++++x=1-2y\"$
\n" ); document.write( "Substituting,
\n" ); document.write( " $\"7%281-2y%29%2B5y=-20\"$
\n" ); document.write( " $\"7-14y%2B5y=-20\"$
\n" ); document.write( " $\"-9y=-27\"$
\n" ); document.write( " $\"highlight%28y=3%29\"$
\n" ); document.write( "Then,
\n" ); document.write( " $\"x=1-2%283%29\"$
\n" ); document.write( " $\"x=1-6\"$
\n" ); document.write( " $\"highlight%28x=-5%29\"$
\n" ); document.write( " \n" ); document.write( "

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