document.write( "Question 527576: Determine using substitution or addition.
\n" ); document.write( "2a+b-2c=5
\n" ); document.write( "3b+4c=1
\n" ); document.write( "3c=-6 \n" ); document.write( "

Algebra.Com's Answer #348948 by solver91311(24713) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "Use substitution. Solve the third equation for

. Substitute the derived value for

into the second equation, then solve the second equation for

. Substitute the derived values for

and

into the first equation and then solve for

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\n" ); document.write( "\n" ); document.write( "John
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\n" ); document.write( "My calculator said it, I believe it, that settles it
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$\"The$

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