Question

How do you simplify `2[7(63div7) + 120] - 152`?

Answer 1

I found `214`.

Explanation:

Start with the division inside the bracket:
`=2[7(9)+120]-152=`
Now deal with the multiplication of `7` and `9`:
`=2[63+120]-152=`
add inside the `[]`;
`=2[183]-152=`
multiply the `2` and subtract `152`:
`=366-152=214`

You may notice (but I do not want to confuse you) that inside the square brackets you had:
`7(63-:7)=7(63/7)=cancel(7)(63/cancel(7))=63` immediately!!!