document.write( "Question 673764: Solve by substitution.
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Algebra.Com's Answer #418845 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( "x-4y=4  0r 
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document.write( "3x+4=4y
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document.write( "3(4y+4) + 4 = 4y
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document.write( " 12y + 12 + 4 = 4y
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document.write( "    8y = -16
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document.write( "     y = -2  and x = -4
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document.write( "and...
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document.write( "3(-4)+ 4 = -8 = 4•(-2) \n" );
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