document.write( "Question 357906: Solve the following system by the addition method.
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Algebra.Com's Answer #255473 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,
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document.write( "Solve the following system by the addition method
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document.write( "3x-7y= -12
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document.write( "3x+14y= -3 
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document.write( "Multiplying the first equation thru by 2 and adding the equations together
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document.write( "6x-14y= -24
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document.write( "3x+14y= -3 
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document.write( "9x = -27
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document.write( "x = -3
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document.write( "substituting x into 3x+14y= -3 
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document.write( "-9 + 14y = -3
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document.write( "14y = 6
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document.write( "y = 6/14 or 3/7
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document.write( "checking our answer with 3x-7y = -12
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document.write( "-9 - 3 = -12
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document.write( "

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