document.write( "Question 418186: Solve by the substitution method. What is the solution of the system?
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Algebra.Com's Answer #292724 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( "-7x+y=63 OR y = 7x+63
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document.write( "7x+3y= -35
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document.write( "7x + 3(7x+63) = -35
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document.write( "     28x = -224
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document.write( "       x = -8 and y = 7  (-56+63)\r
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document.write( "CHECKING our Answer***
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document.write( "using elimination method
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document.write( " 7x+3y= -35
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document.write( "-7x+ y=63
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document.write( "    4y = 28
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document.write( "     y = 7 and x = -56/7 = -8 (using 1st EQ) \n" );
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