Question

12+[(15-)+(9-3)] how is this done

Answer 1

I'll give you a hint. You had to used pemdas stands for: p-parenthesis, e-exponents, m-multiply, d-divide, a-add and s-subtracting that came from left to right.

First you had to calculate with parenthesis first.

$(15)+(9-3)$

$(15)+6$

Then you add and subtract from left to right.

$15+6=21$

$12+21$

Finally add and subtract from left to right.

$=33$

Final answer: $\boxed{=33}$

Hope this helps!

And thank you for posting your question at here on brainly, and have a great day.

-Charlie