How do you simplify 2[7(63div7) + 120] - 1522[7(63÷7)+120]−152?

1 Answer
Gió
Jun 29, 2015

I found 214214.

Explanation:

Start with the division inside the bracket:
=2[7(9)+120]-152==2[7(9)+120]−152=
Now deal with the multiplication of 77 and 99:
=2[63+120]-152==2[63+120]−152=
add inside the [][];
=2[183]-152==2[183]−152=
multiply the 22 and subtract 152152:
=366-152=214=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!!!

Related questions
See all questions in PEMDAS
Impact of this question
1900 views around the world
You can reuse this answer
Creative Commons License