document.write( "Question 871177: a=1/2b+4
\n" ); document.write( "a-4b=-10 \n" ); document.write( "

Algebra.Com's Answer #525370 by Fombitz(32388) $\"\"$ $\"About$

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$\"a=1%2F2b%2B4\"$
\n" ); document.write( " $\"a-b%2F2=4\"$
\n" ); document.write( "1. $\"8a-4b=32\"$
\n" ); document.write( "2. $\"a-4b=-10\"$
\n" ); document.write( "Subtract eq. 2 from eq. 1,
\n" ); document.write( " $\"8a-4b-a%2B4b=32%2B10\"$
\n" ); document.write( " $\"7a=42\"$
\n" ); document.write( " $\"a=6\"$
\n" ); document.write( "Then use either equation to solve for $\"b\"$
\n" ); document.write( " $\"6-b%2F2=4\"$
\n" ); document.write( " $\"-b%2F2=-2\"$
\n" ); document.write( " $\"b=4\"$
\n" ); document.write( " \n" ); document.write( "

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