document.write( "Question 1069073: Sandy is 7 years younger than Mandy, in 4 years time sandy will be half Mandy's age. What are their ages presently \n" ); document.write( "
Algebra.Com's Answer #684319 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
Sandy is 7 years younger than Mandy,
\n" ); document.write( "s = m - 7
\n" ); document.write( " in 4 years time sandy will be half Mandy's age.
\n" ); document.write( "s + 4 = \"1%2F2\"(m + 4)
\n" ); document.write( "get rid of the fraction, multiply both sides by 2
\n" ); document.write( "2(s + 4) = m + 4
\n" ); document.write( "2s + 8 = m + 4
\n" ); document.write( "2s = m + 4 - 8
\n" ); document.write( "2s = m - 4
\n" ); document.write( "replace s with (m-7), from the first statement
\n" ); document.write( "2(m-7) = m - 4
\n" ); document.write( "2m - 14 = m - 4
\n" ); document.write( "2m - m = -4 + 14
\n" ); document.write( "m = 10 yrs is Mandy's age
\n" ); document.write( ":
\n" ); document.write( " What are their ages presently
\n" ); document.write( "I'll let you find Sandy's age, check the solutions in the 2nd statement \n" ); document.write( "
\n" );