document.write( "Question 507777: My sister is three years older than me i am 18 how old is she \n" ); document.write( "
Algebra.Com's Answer #340775 by Maths68(1474)\"\" \"About 
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=18+3
\n" ); document.write( "=21 years old\r
\n" ); document.write( "\n" ); document.write( "My age = 18
\n" ); document.write( "Sisters age = my age + 3
\n" ); document.write( "Sisters age = 18 + 3 = 21\r
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