document.write( "Question 1109454: BILL IS X.
\n" ); document.write( "SUE IS 5 YEARS OLDER THAN BILL.
\n" ); document.write( "JANE IS 3 YEARS YOUNGER THAN BILL.
\n" ); document.write( "WHAT IS THEIR COMBINED AGE.\r
\n" ); document.write( "\n" ); document.write( "I FIRST TRIED TO WRITE THE EQUATIONS. THEN I TRIED TO PLUG IN 10 AS BILL'S AGE. IT JUST DOESN'T MAKE SENSE, UNLESS I'M GIVEN ONE MORE NUMBER.\r
\n" ); document.write( "\n" ); document.write( "S=X+5, OR X=S-5
\n" ); document.write( "J=X-3, OR J=S-5-3, THUS J=S-8.\r
\n" ); document.write( "\n" ); document.write( "IF X=10, THEN S=15 AND J=7
\n" ); document.write( "SUM OF ALL AGES IS 32.\r
\n" ); document.write( "\n" ); document.write( "BUT IF I PLUG IN ANOTHER NUMBER FOR BILL, THEN THE ENTIRE ANSWER CHANGES.
\n" ); document.write( "I THINK MY BOOK SHOULD HAVE GIVEN ME ONE MORE NUMBER IN ORDER TO SOLVE THESE AGES.
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Algebra.Com's Answer #724442 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
Reading the problem, I think they
\n" ); document.write( "want the answer in terms of \"+x+\"
\n" ); document.write( "plus a number, as follows:
\n" ); document.write( "\"+x+\" = Bill's age
\n" ); document.write( "\"+x+%2B+5+\" = sue's age
\n" ); document.write( "\"+x+-+3+\" = Jane's age
\n" ); document.write( "------------------------
\n" ); document.write( "\"+x+%2B+x+%2B+5+%2B+x+-+3+=+3x+%2B+2+\"
\n" ); document.write( "---------------------------------
\n" ); document.write( "Notice that you can't use \"+x+=+2+\"
\n" ); document.write( "That gives you \"+x+-+3+=+-1+\"
\n" ); document.write( "for Jane's age
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