document.write( "Question 134802This question is from textbook Algebra 1 workbook
\n" ); document.write( ": Can you help me solve:\r
\n" ); document.write( "\n" ); document.write( "3b-a=-7
\n" ); document.write( "5a+6b=14 \n" ); document.write( "

Algebra.Com's Answer #98697 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"3b+-+a+=+-7\"$
\n" ); document.write( " $\"5a+%2B+6b+=+14\"$
\n" ); document.write( "First get them both in the order $\"a\"$ first, $\"b\"$ second
\n" ); document.write( " $\"-a+%2B+3b+=+-7\"$
\n" ); document.write( " $\"5a+%2B+6b+=+14\"$
\n" ); document.write( "Multiply the 1st equation by 5 and add the equations
\n" ); document.write( " $\"-5a+%2B+15b+=+-35\"$
\n" ); document.write( " $\"5a+%2B+6b+=+14\"$
\n" ); document.write( " $\"21b+=+-+21\"$
\n" ); document.write( " $\"b+=+-1\"$ answer
\n" ); document.write( " $\"3b+-+a+=+-7\"$
\n" ); document.write( " $\"3%2A%28-1%29+-+a+=+-7\"$
\n" ); document.write( " $\"-a+=+-4\"$
\n" ); document.write( " $\"a+=+4\"$ answer
\n" ); document.write( "check:
\n" ); document.write( " $\"3b+-+a+=+-7\"$
\n" ); document.write( " $\"3%2A%28-1%29+-+4+=+-7\"$
\n" ); document.write( " $\"-3+-+4+=+-7\"$
\n" ); document.write( " $\"-7+=+-7\"$
\n" ); document.write( " $\"5a+%2B+6b+=+14\"$
\n" ); document.write( " $\"5%2A4+%2B+6%2A%28-1%29+=+14\"$
\n" ); document.write( " $\"20+-+6+=+14\"$
\n" ); document.write( " $\"14+=+14\"$
\n" ); document.write( "OK \n" ); document.write( "

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