How do you simplify $12^2-[20div2+5(6+1)]$ ?

Question

1537 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-11-14T09:55:33

$99$

Identify the different terms first.
Each term will simplify to a single answer and these will be added or subtracted only in the last line.

Within each term, the order of operations is:

-Brackets,
-powers and roots,
-multiply and divide

There are 2 terms. but inside the bracket there are also 2 terms.

$color(blue)(12^2) -[color(red)(20div2)color(purple)(+5(6+1))]$

$=color(blue)(144) -[color(red)(10)color(purple)(+5(7))]$

$=color(blue)(144) -[color(red)(10)color(purple)(+35)]$

$=color(blue)(144) -45$

$=99$

How do you simplify 12^2-[20div2+5(6+1)]12^2-[20div2+5(6+1)]?