Question

Solve the problem [(-9+6 ) + 15] /4 ?

Answer 1

[(-9+6)+ 15]/4 brackets first, calculate whats in the parenthesis

[(-3)+15]/4
12/4
= 3

Answer 2

Use PEMDAS:

P Parentheses first

E Exponents (ie Powers and Square Roots, etc.)

MD Multiplication and Division (left-to-right)

AS Addition and Subtraction (left-to-right).

$\dfrac{(-9+6)+15}{4}=\dfrac{-3+15}{4}=\dfrac{12}{4}=3$