Question

simplify the expression -(-7y+12)

Answer 1

this is perhaps already quite simplified all you can do is
7y - 12
for the final solution

Answer 2

ok thank you

Answer 3

You know what happened, though?
When you have a lone minus sign sitting outside some parentheses, it's basically telling you to change all the pluses inside the parentheses into minuses, and vice versa.

Answer 4

lol thank you