document.write( "Question 1051407: Solve system by elimination \r
\n" ); document.write( "\n" ); document.write( "-6c= 30
\n" ); document.write( "3b+2c=-7
\n" ); document.write( "b=a-3c-18
\n" ); document.write( "

Algebra.Com's Answer #666965 by Alan3354(69443)\"\" \"About 
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Solve system by elimination \r
\n" ); document.write( "\n" ); document.write( "-6c= 30 --> c = -5
\n" ); document.write( "3b+2c=-7
\n" ); document.write( "b=a-3c-18
\n" ); document.write( "-------
\n" ); document.write( "Step 1, sub -5 for c.
\n" ); document.write( "Solve for b in the 2nd equation.
\n" ); document.write( "Then solve for a.
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