Answer:
-6
Step-by-step explanation:
next step is
-10 +4
you move the 4 to the other side
that equals -6
I think Its 6.............
Hi there!
First we need to remember the following.

Now substitute both of the formulas.

Work out the parenthesis.

And finally collect terms.

~ Hope this helps you!
The answer is 72.1.you should dot infront sizes and then equals them