Question 1095954
Twelve years ago Jane was five times as old as Anne. 

{{{J-12 = 5(A-12)}}}

In three years time, Anne will be half of Jane's age. 

{{{A+3 =expr(1/2)(J+3)}}}
<pre>
Simplify and solve this system of equations:

{{{system(J-12 = 5(A-12),
A+3 =expr(1/2)(J+3))}}}

by substitution or elimination (addition)

Edwin</pre>