Question

Combine like terms to create an equivalent
expression.
7.4z - 5(-1.6z + 2.4)

Answer 1

`=15.4z-12`

Step-by-step explanation:

The initial expression that we have in this problem is

`7.4z-5(-1.6z+2.4)`

First of all, we multiply the -5 by all the terms in the brackets. Doing so, we get the following expression:

`7.4z-5(-1.6z)-5(2.4)=7.4z+8z-12`

Now we can combine the like terms, which are the terms having the same variable.

Here the like terms are:

`7.4z, 8z`

and

-12

Combining the first 2 terms we get

`7.4z+8z=15.4 z`

Therefore, the final expression overall is:

`=15.4z-12`