document.write( "Question 1126826: Larry is 8 years older than moe. Curly is 3 times as old as moe. Five years ago ))the sum of larrys and moes age was 4 less than curlys age. What is there present ages? \n" ); document.write( "

Algebra.Com's Answer #743157 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+a+\"$ = Larry's age now
\n" ); document.write( "Let $\"+b+\"$ = Curly's age now
\n" ); document.write( "Let $\"+c+\"$ = Moe's age now
\n" ); document.write( "---------------------------------
\n" ); document.write( "(1) $\"+a+=+c+%2B+8+\"$
\n" ); document.write( "(2) $\"+b+=+3c+\"$
\n" ); document.write( "(3) $\"+a+-+5+%2B+c+-+5+=+b+-+5+-+4+\"$
\n" ); document.write( "------------------------------------
\n" ); document.write( "(3) $\"+a+%2B+c+-+10+=+b+-+9+\"$
\n" ); document.write( "(3) $\"+a+-+b+%2B+c+=+1+\"$
\n" ); document.write( "Plug (1) and (2) into (3)
\n" ); document.write( "(3) $\"+c+%2B+8+-+3c+%2B+c+=+1+\"$
\n" ); document.write( "(3) $\"+-c+=+-7+\"$
\n" ); document.write( "(3) $\"+c+=+7+\"$
\n" ); document.write( "and
\n" ); document.write( "(1) $\"+a+=+7+%2B+8+\"$
\n" ); document.write( "(1) $\"+a+=+15+\"$
\n" ); document.write( "and
\n" ); document.write( "(2) $\"+b+=+3%2A7+\"$
\n" ); document.write( "(2) $\"+b+=+21+\"$
\n" ); document.write( "-----------------------
\n" ); document.write( "Larry is 15
\n" ); document.write( "Curly is 21
\n" ); document.write( "Moe is 7
\n" ); document.write( "-----------------
\n" ); document.write( "check:
\n" ); document.write( "(3) $\"+a+-+b+%2B+c+=+1+\"$
\n" ); document.write( "(3) $\"+15+-+21+%2B+7+=+1+\"$
\n" ); document.write( "(3) $\"+22+-+21+=+1+\"$
\n" ); document.write( "(3) $\"+1+=+1+\"$
\n" ); document.write( "OK \n" ); document.write( "

\n" );