document.write( "Question 820919: 3x+4y=31
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Algebra.Com's Answer #493763 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi,
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document.write( "3x+4y=31
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document.write( "2x-4y=-6   |Adding EQs so as to eliminate the y variable
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document.write( "    5x = 25
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document.write( "     x = 5  and y = 4   ( 4y = 31-15, 4y = 16, y = 4)
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document.write( "CHECKING our answer***using:  2x-4y = -6
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document.write( " 10 - 16 = -6 \n" );
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