document.write( "Question 1067019: lisa is six years older than susan,jessie is 5 years older than lisa ,and the total of their ages is 41 how old is susan \n" ); document.write( "
Algebra.Com's Answer #682319 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! let the 3 girls be, L, S, & J \n" ); document.write( "write an equation for each statment \n" ); document.write( "\" lisa is six years older than susan,\" \n" ); document.write( "L = S + 6 \n" ); document.write( "or \n" ); document.write( "S = L - 6 \n" ); document.write( ": \n" ); document.write( "\"jessie is 5 years older than lisa ,\" \n" ); document.write( "J = L + 5 \n" ); document.write( ": \n" ); document.write( "\" the total of their ages is 41\" \n" ); document.write( "L + S + J = 41 \n" ); document.write( "replace S with (L-6); replace J with (L+5) \n" ); document.write( "L + (L-6) + (J+5) = 41 \n" ); document.write( "3L - 1 = 41 \n" ); document.write( "3L = 42 \n" ); document.write( "L = 42/3 \n" ); document.write( "L = 14 yrs is Lisa's age \n" ); document.write( ": \n" ); document.write( " how old is susan \n" ); document.write( "S = 14 - 6 \n" ); document.write( "S = 8 yrs is Susan \n" ); document.write( " |