Answer:
10a+6b
pls mark as brainliest.
Step-by-step explanation:
I think you mean 4a+6(a+b)?
We need to multiply out the the 6(a+b) first.
4a+6(a+b)
=> 4a+6a+6b
Then, we can add the like terms, which in this case are 4a and 6a:
=> 10a+6b
pls mark as brainliest.