document.write( "Question 831326: 2x = 2y + 40
\n" ); document.write( "3y = 72 - 9x \n" ); document.write( "

Algebra.Com's Answer #501299 by Fombitz(32388) $\"\"$ $\"About$

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1. $\"2x+=+2y+%2B+40\"$
\n" ); document.write( "2. $\"3y+=+72+-+9x\"$
\n" ); document.write( "From eq. 2,
\n" ); document.write( " $\"y=24-3x\"$
\n" ); document.write( "Substitute into eq. 1,
\n" ); document.write( " $\"2x=2%2824-3x%29%2B40\"$
\n" ); document.write( " $\"2x=48-6x%2B40\"$
\n" ); document.write( " $\"8x=88\"$
\n" ); document.write( " $\"highlight%28x=11%29\"$
\n" ); document.write( "Then use either equation to solve for y.
\n" ); document.write( " $\"y=24-3x\"$
\n" ); document.write( " $\"y=24-3%2811%29\"$
\n" ); document.write( " $\"y=24-33\"$
\n" ); document.write( " $\"highlight%28y=-9%29\"$
\n" ); document.write( " \n" ); document.write( "

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