document.write( "Question 1136555: The sum of the ages of Steve and Jeff is 69.In seven years, Steve age will be four less than twice Jeff's age . How old is each now? \n" ); document.write( "
Algebra.Com's Answer #754333 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
s = Steve's present age
\n" ); document.write( "j = Jeff's
\n" ); document.write( ":
\n" ); document.write( "Write an equation for each statement
\n" ); document.write( ":
\n" ); document.write( "The sum of the ages of Steve and Jeff is 69.
\n" ); document.write( "s + j = 69
\n" ); document.write( "j = -s + 69
\n" ); document.write( "In seven years, Steve age will be four less than twice Jeff's age.
\n" ); document.write( "(s+7) = 2(j+7) - 4
\n" ); document.write( "s + 7 = 2j + 14 - 4
\n" ); document.write( "s = 2j + 10 - 7
\n" ); document.write( "s = 2j + 3
\n" ); document.write( "replace j with (-s+69) from the 1st statement
\n" ); document.write( "s = 2(-s+69) + 3
\n" ); document.write( "s = -2s + 138 + 3
\n" ); document.write( "s + 2s = 141
\n" ); document.write( "3s = 141
\n" ); document.write( "s = 141/3
\n" ); document.write( "s = 47 yrs is Steve's age
\n" ); document.write( "then
\n" ); document.write( "j = -47 + 69
\n" ); document.write( "j = 22 yrs is Jeff's age
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check solutions in the statement
\n" ); document.write( "\"In seven years, Steve age will be four less than twice Jeff's age\"
\n" ); document.write( "47 + 7 = 2(22+7) - 4
\n" ); document.write( "54 = 2(29)
\n" ); document.write( "54 = 58 - 4 \n" ); document.write( "
\n" );