document.write( "Question 306963: Solve by substitution: 3x -5y =-27
\n" ); document.write( " 2x + y = -5 \n" ); document.write( "

Algebra.Com's Answer #219668 by Fombitz(32388) $\"\"$ $\"About$

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1. $\"3x+-5y+=-27\"$
\n" ); document.write( "2. $\"2x+%2B+y+=+-5\"$
\n" ); document.write( "From eq. 2,
\n" ); document.write( " $\"2x%2By=-5\"$
\n" ); document.write( " $\"y=-2x-5\"$
\n" ); document.write( " $\"5y=-10x-25\"$
\n" ); document.write( "Substitute into eq. 1,
\n" ); document.write( " $\"3x+-5y+=-27\"$
\n" ); document.write( " $\"3x+-%28-10x-25%29+=-27\"$
\n" ); document.write( " $\"3x%2B10x%2B25=-27\"$
\n" ); document.write( " $\"13x=-52\"$
\n" ); document.write( " $\"highlight%28x=-4%29\"$
\n" ); document.write( "Then from eq. 2,
\n" ); document.write( " $\"y=-2x-5\"$
\n" ); document.write( " $\"y=-2%28-4%29-5\"$
\n" ); document.write( " $\"y=8-5\"$
\n" ); document.write( " $\"highlight%28y=3%29\"$ \n" ); document.write( "

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