Question 1205763
<pre>

{(4x,-,4y,=,16),(2x,+,4y,=,14):}

Why the commas??

{{{system(4x-4y=16,2x+4y=14)}}}

Add the equations term by term and the -4y and the +4y 
will cancel out. Then you can solve for x, then substitute 
that number for x into either of the other equations, then
you can solve for y.

Edwin</pre>