I have a question (you dont have to answer it its just there so the pic will stay up) why am i sad? (u like my anime)

I love them

you're ready talented

are you an artist?

That is a very nice anime my dude :)

but as for your question, that's an answer I've been trying to find for years myself

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^