document.write( "Question 1022330: lilly and rosie are sisters. the sum of their age is 19 and the positive difference of their ages is 9. set up a system of equations involving lilly's age, L, and Rosies age, R, assuming that lilly is the older child. solve the system to find their ages. \n" ); document.write( "
Algebra.Com's Answer #638085 by ankor@dixie-net.com(22740)\"\" \"About 
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lilly and rosie are sisters.
\n" ); document.write( " the sum of their age is 19 and the positive difference of their ages is 9.
\n" ); document.write( " set up a system of equations involving lilly's age, L, and Rosies age, R, assuming that lilly is the older child. solve the system to find their ages.
\n" ); document.write( ":
\n" ); document.write( "L + R = 19
\n" ); document.write( "L - R = 9
\n" ); document.write( "-----------Adding eliminates R, find L
\n" ); document.write( "2L = 28
\n" ); document.write( "L = 28/2
\n" ); document.write( "L = 14 yr
\n" ); document.write( ":
\n" ); document.write( "Find R
\n" ); document.write( "14 + R = 19
\n" ); document.write( "R = 19 - 14
\n" ); document.write( " R = 5 yrs
\n" ); document.write( ";
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\n" ); document.write( "Check solutions, find the sum
\n" ); document.write( "14 + 5 = 19 \n" ); document.write( "
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