document.write( "Question 1115681: Make A the subject of the formula Sn=Ar(r^n-1)/r-1
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Algebra.Com's Answer #730611 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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Make A the subject of the formula $\"Sn=%28Ar%28r%5En-1%29%29%2F%28r-1%29\"$
\n" ); document.write( "distribute r
\n" ); document.write( " $\"Sn=%28A%28r%5E%28n%2B1%29-r%29%29%2F%28r-1%29\"$
\n" ); document.write( "multiply both sides by (r-1)
\n" ); document.write( " $\"A%28r%5E%28n%2B1%29-r%29\"$ = $\"Sn%28r-1%29\"$
\n" ); document.write( "divide both sides by $\"r%5E%28n%2B1%29-r\"$
\n" ); document.write( "A = $\"Sn%28r-1%29%2F%28r%5E%28n%2B1%29-r%29%29\"$ \r
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