Answer:
The blue area is 2a
Step-by-step explanation:
So, first, let's scope out the problem and split it up.
We have +10 on both sides, so we don't need to worry about that.
Now, 5a-3a+___=4a
So, if we do 5a-3a, we get 2a
So, 2a+___=4a
now, we can subtract 2a from b oth sides, and we are left with 2a
So, your answer is 2a!
