Question 1093532
<br>It's just like combining like terms in the algebra you are probably familiar with.  If the expression were<br>
{{{( 7x + 5y) - ( -9x + y)}}}<br>
then you would do something like this:<br>
{{{( 7x + 5y) + ( 9x - y)}}}
{{{(7x+9x) + (5y-y)}}}
{{{16x+4y}}}<br>
Do the same thing with your expression.