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

1 Answer
Jun 29, 2015

Answer:

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!!!