document.write( "Question 189858: jamie is 5 years older than her sister amy. If the sum of their ages is 19, how old is jamie? \n" ); document.write( "
Algebra.Com's Answer #142488 by Mathtut(3670)\"\" \"About 
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let j and a be the ages of jamie and amy
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\n" ); document.write( "j+a=19........eq 1
\n" ); document.write( "j=a+5.........eq 2
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\n" ); document.write( "take j's value from eq 2 and plug it into eq 1
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\n" ); document.write( "a+5+a=19
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\n" ); document.write( "2a=14
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\n" ); document.write( "a=7
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\n" ); document.write( "j=a+5=7+5=12
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