document.write( "Question 625015: Use the method of substitution to solve the system of linear equations.\r
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Algebra.Com's Answer #393225 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
Hint: Since 6a is both 7-b and 6-b, this means that \r
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\n" ); document.write( "\n" ); document.write( "7 - b = 6 - b
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