document.write( "Question 407254: Before solving X + 3Y= 6 and 2X + 4Y= 7 by elimination, it would be helpful to multiply the first equation by what? \n" ); document.write( "

Algebra.Com's Answer #287263 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "solving by elimination:
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document.write( "X + 3Y= 6 
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document.write( "2X + 4Y= 7\r
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document.write( "-2X -6Y= -12
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document.write( " 2X +4Y = 7   |Adding the equations after multiplying 1st by -2
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document.write( "    -2Y = -5
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document.write( "      Y = 5/2   
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document.write( "X = 6-3Y = 12/2-15/2
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document.write( "      X = -3/2
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document.write( "CHECKING our Answer***
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document.write( " 2X + 4Y= 7
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document.write( " -3 + 10 = 7 \n" );
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