Find the quotient.

(5ab - 10b2 + 15bc) : 5b

a + 2b - 3c

a - 2b + 3c

a - 2b - 3c

To do this, divide each term in the parenthesis with 5b. When you divide exponents with the same base, just take their difference:

(5/5) ab^ (1-1) - (10/5) b^ (2-1) + (15/5) b^ (1-1) c

ab^0 - 2b + 3b^0c

a - 2b + 3c

I hope I was able to give a good explanation. Have a good day.