How do you simplify $30 - [9 + 4 (8 - 5)]$ $30-[9+4(8-5)]$ ?

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Answer 1 · 2015-04-14T10:09:08

First you get rid of the inner brackets, then the outer:

$= 30 - [9 + 4 \cdot 3] = 30 - [9 + 12] = 30 - 21 = 9$ $=30-[9+4*3]=30-[9+12]=30-21=9$

How do you simplify 30−[9+4(8−5)]30-[9+4(8-5)]?