Question

@astrophysics

Answer 1

I'm pretty sure it's B, just wanted to double check.

Answer 2

Perfect!

Answer 3

When we drop brackets we have -7+7 so that cancels out and we're left with 3x/5

Answer 4

I always second guess myself with math, I've never been good at it.

Answer 5

Haha, I do the same, but we should be confident with our answers :)

Answer 6

That's what I've been told! haha.

Answer 7

@Astrophysics can you check this for me? aha I think it's A.

Answer 8

\[\checkmark \]

Answer 9

@Astrophysics would this be B?