document.write( "Question 920800: Bobby is 3 years older than Chris. Last year, the sum of their ages was 39. how old is each now?
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Algebra.Com's Answer #558598 by multiplier(8)![]() ![]() ![]() You can put this solution on YOUR website! let x- age of chris at present \n" ); document.write( " (x+3)- age of bobby at present, we add 3 to chris's age bec. he is 3 years younger than bobby \n" ); document.write( " last year the sum of their ages is 39\r \n" ); document.write( "\n" ); document.write( " before we get the sum of their ages which is equal to 39, we must subtract 1 year from their ages \n" ); document.write( " (x-1) - age of chris last year \n" ); document.write( " {(x+3)-1} - age of boby last year \n" ); document.write( "proceeding to addition, \n" ); document.write( " (x-1) + ({x+3}-1)=39 \n" ); document.write( " x=19 age of chris at present \n" ); document.write( " x+3=19+3=22 age of bobby at present \n" ); document.write( " |