21-6+3-6 order of operations??

PEMDAS

they actually changed it so now its

PEM/DA/S

multiplication is interchangeable with division and so is addition and subtraction

Step-by-step explanation:

21-6=15

15+3=18

18-6=12

12 is the answer

answer:

the position of equilibrium will shift to the left.

step-by-step explanation:

the general equation for the dissociation of a weak base is

b + h₂o   ⇌   bh⁺ + oh⁻

according to le châtelier's principle, when a stress is applied to a system at equilibrium, the system will respond in a way that tends to relieve the stress.

if you apply a stress by adding more bh⁺ or oh⁻,   the system will respond by moving in a direction that gets rid of the added ions.

the position of equilibrium will shift to the left, forming more of the undissociated base.