# How do you combine like terms in #-7.7z + - 10.7( 8.6+ - 7.8z )#?

##### 2 Answers

#### Explanation:

**Given:**

**Steps:**

First, distribute

You now have an expression that looks like this:

You can rearrange the expression to put the like terms next to each other:

To finish, use the order of operations, which says that addition and subtraction are to be used from left to right in the expression.

Start by solving

Your expression now looks like this:

This is your final answer, as all like terms have been combined and you can't simplify any further.

The expression

#### Explanation:

You have the expression

We can simplify this by realizing that adding by a negative number is the same as subtracting that same number. So now, we have the expression

In order to add like terms in this expression, you must first use the distributive property to multiply

First multiply

Then multiply

Now we can put the products we just found back into the expression. The expression we have now is

The final step is to combine like terms in order to simplify the expression.

*has no like terms to combine with so it simply remains the same

And your final expression is