document.write( "Question 839308: I am trying to help my son without a textbook because his school does not supply textbooks. We have been trying to find out how to use the elimination method for this problem. Please help.\r
\n" ); document.write( "\n" ); document.write( "7x+y=-17
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\n" ); document.write( "\n" ); document.write( "If you can show us step by step, we will surely appreciate any help and referrals. This is Algebra II. Thanks! Marnie M. Melton \n" ); document.write( "

Algebra.Com's Answer #505657 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( "Good! You found Algebra.com ... a number of 'excellent' tutors monitor the site.
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document.write( "Thank You for Your kind words.
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document.write( "using the elimination method:
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document.write( "7x+y=-17    |Multiply 1st EQ by 10 and add to 2nd to eliminate y
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document.write( "3x-10y=24 \r
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document.write( "70x+10y=-170    |Multiply 1st EQ by 10 and add to 2nd to eliminate y
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document.write( " 3x-10y=24
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document.write( "  73x = -146
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document.write( "    x =  -2   and y = -3  |Note: 7x+y = -17, -14 + y = -17,  y = -3
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document.write( "CHECKING our answer***
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document.write( "using: 3x-10y=24 
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document.write( "  -6 + 30 = 24 \n" );
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