Simplify the Expression: 12x-(13x+4y) Step by Step

First, we open the parentheses and change the sign accordingly.

Since there are only positive numbers inside the parentheses, multiplying by minus will give us negative numbers:

$12x-13x-4y=$

Now we group the x factors:

$12x-13x=-1x$

Now we obtain:

$-1x-4y$