document.write( "Question 256604: 1/2(2n+6)=5n-12-n \n" ); document.write( "

Algebra.Com's Answer #188691 by checkley77(12844) $\"\"$ $\"About$

You can put this solution on YOUR website!
1/2(2n+6)=5n-12-n
\n" ); document.write( "(2n+6)/2=4n-12 cross multiply
\n" ); document.write( "2n+6=2(4n-12)
\n" ); document.write( "2n+6=8n-24
\n" ); document.write( "2n-8n=-24-6
\n" ); document.write( "-6n=-30
\n" ); document.write( "n=-30/-6
\n" ); document.write( "n=5 ans.
\n" ); document.write( "Proof:
\n" ); document.write( "1/2(2*5+6)=5*5-12-5
\n" ); document.write( "1/2(10+6)=25-17
\n" ); document.write( "1/2*16=8
\n" ); document.write( "8=8 \n" ); document.write( "

\n" );