document.write( "Question 125832This question is from textbook Algebra I
\n" ); document.write( ": This is my son'd hoework assignment, in the back of the book on page 803 in the extra practice section he has to solve proble # 18using linear combinations to solve linear equations. The problem is:\r
\n" ); document.write( "\n" ); document.write( "3x+7y=-1
\n" ); document.write( "7y=-6x\r
\n" ); document.write( "\n" ); document.write( "If I rearrange the equation to solve it looks like this:\r
\n" ); document.write( "\n" ); document.write( " 3x+7y=-1
\n" ); document.write( "-6x-7y=?\r
\n" ); document.write( "\n" ); document.write( "Now what do we do? \n" ); document.write( "
Algebra.Com's Answer #92215 by checkley71(8403)\"\" \"About 
You can put this solution on YOUR website!
3x+7y=-1 now multiply the other equation by -1 [-7y=6x] now subtract -6x from both sides [-6x-7y=6x-6x. now you have 6x-6x=0 on the right side. now add these two equations.
\n" ); document.write( "3x+7y=-1
\n" ); document.write( "-6x-7y=0
\n" ); document.write( "----------------------------------
\n" ); document.write( "-3x=-1
\n" ); document.write( "x=-1/-6
\n" ); document.write( "x=1/6 answer.
\n" ); document.write( "7y=-6*1/6
\n" ); document.write( "7y=-1
\n" ); document.write( "y=-1/7 answer.
\n" ); document.write( " \n" ); document.write( "
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