Table show step by step how do you simplify the algebraic expression 3(x-5)+rx.
Justify step 4

Commutative Property (choice C)

Explanation:

Here are all of the justifications for each step

Step 1. None needed. This is the original expressionStep 2. Distributive propertyStep 3. Multiply  (the 3 and 5 multiply to 15)Step 4. Commutative property. Specifically, this is the commutative property of addition which allows us to add any two numbers in any order we want. In this case, the  -15 and 4x terms swap places.Step 5. Associative property. The parenthesis group the first two terms away from the third term.Step 6. Combine like terms. Both 3x and 4x have an x only so they are like terms that combine to 7x. You can think of it as 3+4 = 7, then you just tack an x onto everything to get 3x+4x = 7x.

Hmmm i had this before , give me a sec