document.write( "Question 509700: Will you please help me solve for a: 15a-2(4a+5)=-6a \n" ); document.write( "

Algebra.Com's Answer #341553 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+15a-2%284a%2B5%29=-6a+\"$
\n" ); document.write( " $\"+15a+-+8a+-+10+=+-6a+\"$
\n" ); document.write( "Add $\"6a\"$ to both sides
\n" ); document.write( " $\"+15a+-+8a+%2B+6a+-+10+=+0+\"$
\n" ); document.write( "Add $\"10\"$ to both sides
\n" ); document.write( " $\"+15a+-+8a+%2B+6a+=+10+\"$
\n" ); document.write( "Do the indicated addition and
\n" ); document.write( "subtraction of terms on the left side
\n" ); document.write( " $\"+13a+=+10+\"$
\n" ); document.write( " $\"+a+=+10%2F13+\"$
\n" ); document.write( "--------------
\n" ); document.write( "You can check this by putting
\n" ); document.write( "answer back into original equation
\n" ); document.write( "I'll use decimal equivilant $\"+10%2F13+=+.7692+\"$
\n" ); document.write( " $\"+15a-2%284a%2B5%29=-6a+\"$
\n" ); document.write( " $\"+15%2A.7692-2%284%2A.7692%2B5%29=-6%2A.7692+\"$
\n" ); document.write( " $\"+11.5385+-+2%2A%283.0768+%2B+5%29+=+-4.6152+\"$
\n" ); document.write( " $\"+11.5385+-+2%2A8.0768+=+-4.6152+\"$
\n" ); document.write( " $\"+11.5385+-+16.1536+=+-4.6152+\"$
\n" ); document.write( " $\"+-4.6151+=+-4.6152+\"$
\n" ); document.write( "OK- the error must be due to rounding off \n" ); document.write( "

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