document.write( "Question 954957: the sun of the ages of 6 children born at intervals of 3 years each is 81. what is the age of the youngest ? \n" ); document.write( "

Algebra.Com's Answer #583299 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+x+\"$ = the age of the youngest one
\n" ); document.write( "Their ages are:
\n" ); document.write( " $\"+x+\"$ , $\"+x+%2B+3+\"$ , $\"+x+%2B+6+\"$ , $\"+x+%2B+9+\"$ , $\"+x+%2B+12+\"$
\n" ); document.write( "and $\"+x+%2B+15+\"$
\n" ); document.write( "------------------
\n" ); document.write( " $\"+x+%2B+x+%2B+3+%2B+x+%2B+6+%2B+x+%2B+9+%2B+x+%2B+12+%2B+x+%2B+15+=+81+\"$
\n" ); document.write( " $\"+6x+%2B+45+=+81+\"$
\n" ); document.write( " $\"+6x+=+36+\"$
\n" ); document.write( " $\"+x+=+6+\"$
\n" ); document.write( "The youngest is 6
\n" ); document.write( "------------------
\n" ); document.write( "check:
\n" ); document.write( "Their ages are:
\n" ); document.write( " $\"+6+%2B+9+%2B+12+%2B+15+%2B+18+%2B+21+=+81+\"$
\n" ); document.write( " $\"+81+=+81+\"$
\n" ); document.write( "OK
\n" ); document.write( " \n" ); document.write( "

\n" );