document.write( "Question 1072304: 5x+4y=12
\n" ); document.write( "3x+4y=4
\n" ); document.write( "solve by substitution \n" ); document.write( "

Algebra.Com's Answer #687219 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
From eq. 1,
\n" ); document.write( " $\"4y=-5x%2B12\"$
\n" ); document.write( "Substitute into eq. 2,
\n" ); document.write( " $\"3x%2B%28-5x%2B12%29=4\"$
\n" ); document.write( " $\"-2x%2B12=4\"$
\n" ); document.write( " $\"-2x=-8\"$
\n" ); document.write( "Solve for x then use either equation to solve for y. \n" ); document.write( "

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