Final answer:
To solve the problem, we can set up a simple equation: x - 6 = 54. Subtract 6 from both sides of the equation to isolate the variable x.
Step-by-step explanation:
In this question, the subject is Mathematics and the grade level is Middle School.
To solve the problem, we can set up an equation:
x - 6 = 54
We subtract 6 from both sides of the equation to isolate the variable x:
x = 60
Therefore, the box initially had 60 pencils.