The answer is 15 cause you start at 15 and go from there
You have to find the GCF of 140 and 180.
The GCF is 20 so thats your answer.
Greetings!Simplify.

Distribute the Parenthesis.

Combine Like Terms.


Hope this helps.
-Benjamin
Answer:
(a+3)^3
a^3 + b^3 + 3ab [identity : (a+b)^3 )]
a^3+ 3^3 + 3×a×3
a^3 +27+9a
answer : a^3+27+9a
hope it helps you
mrk me braniliest plz