document.write( "Question 390155: 3x+y=2
\n" ); document.write( "4x+y=20 \n" ); document.write( "

Algebra.Com's Answer #276600 by Fombitz(32388) $\"\"$ $\"About$

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Subtract eq. 1 from eq. 2,
\n" ); document.write( " $\"4x%2By-3x-y=20-2\"$
\n" ); document.write( " $\"highlight%28x=18%29\"$
\n" ); document.write( "Then use either equation to solve for $\"y\"$ ,
\n" ); document.write( " $\"4%2818%29%2By=20\"$
\n" ); document.write( " $\"72%2By=20\"$
\n" ); document.write( " $\"highlight%28y=-52%29\"$
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