(5z−3)−(3z−8)
In order to solve this problem, we must first distribute the -1 into the (3z - 8)
5z - 3 - 3z + 8
Next, we can combine like terms. We can combine everything that has a "z" in it together and anything that doesn't have a "z" together.
5z - 3z = 2z and -3 + 8 = 5
So your simplified answer is 2z + 5
Hope this helped!