Answer:
After rewriting, we get,
-60a+20
So, in the first bracket, we get -60 and in the 2nd , we get 20
Explanation:
The distributive property means that we multiply the term outside the brackets with each term in the brackets.
so,
for

this means that we multily -5 with both 12a and with -4, we get,

Hence the answer is,
-60a+20