Question

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

Answer 1

Answer:   $15.4z-12$

Step-by-step explanation:

For this exercise it is important to remember:

• The Distributive property:

       $a(b\±c)=ab\±ac$

• The multiplication of signs:

        $(+)(+)=+\\\\(-)(-)=+\\\\(-)(+)=-$

Then, given the following expression:

$7.4z−5(-1.6z+2.4)$

You need to  apply the Distributive property. Then:

$=7.4z+8z-12$

Now you can combine like terms (or add the like terms). Then you get:

$=15.4z-12$

Therefore, the equivalent expression created by combining like terms, is:

 $15.4z-12$