document.write( "Question 632066: The sum of a brother and sister age is 8 years. If the age of the sister is 7 years younger than the brother, what are their ages? \n" ); document.write( "
Algebra.Com's Answer #397990 by richwmiller(17219)\"\" \"About 
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b+s=8
\n" ); document.write( "s=b-7
\n" ); document.write( "b+b-7=8
\n" ); document.write( "2b=15
\n" ); document.write( "b=7.5
\n" ); document.write( "s=.5\r
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