First, we can remove the parenthesis and distribute the negative sign in our expression using the Distributive Property.
(2r-13)-(- 6r+4) ⇔ 2r-13-(- 6r)+4
The next step in simplifying this expression is to identify which, if any, terms can be combined. Remember, only like terms — constant terms or terms with the same variable — can be combined.
2r - 13 - (- 6r) - 4
In this case, we have two r-terms and two constants. Both the r-terms and constants can be combined. In this case, we can rearrange the expression according to the Commutative Property of Addition and then use the [[RulesDistributive Property to simplify the expression.
