How do i solve step by step -(5a²b-6ab+16c)+(7ab-4a²b)
-(5a²b-6ab+16c)+(7ab-4a²b)
Distribute the negative over the terms in the first set of parentheses
-5a²b+6ab-16c)+7ab-4a²b combine like terms
-9a^2b + 13ab -16c