document.write( "Question 214359: s=(n)/(2)[2a+(n-1)d] make d subject of formula \n" ); document.write( "

Algebra.Com's Answer #161942 by Earlsdon(6294) $\"\"$ $\"About$

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$\"s+=+%28n%2F2%29%282a%2B%28n-1%29d%29\"$ Multiply both sides by $\"2%2Fn\"$
\n" ); document.write( " $\"2s%2Fn+=+2a%2B%28n-1%29d\"$ Subtract 2a from both sides.
\n" ); document.write( " $\"%282s%2Fn%29-2a+=+%28n-1%29d\"$ Simplify the left side.
\n" ); document.write( " $\"%282s-2an%29%2Fn+=+%28n-1%29d\"$ Divide both sides by $\"%28n-1%29\"$
\n" ); document.write( " $\"%282s-2an%29%2Fn%28n-1%29+=+d\"$ Simplify the left side.
\n" ); document.write( " $\"d+=+2%28s-an%29%2F%28n%5E2-n%29\"$ \n" ); document.write( "

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