four friends shane a box of pens.each 3 pens write and solve the equation to find the number of pens in the box

4 * 3 = x

thank you

You're welcome.

To solve this problem, we need to set up an equation. Let's say the number of pens in the box is represented by the variable "x".

According to the problem, each of the four friends took 3 pens. So in total, they used 4 friends * 3 pens = 12 pens.

We can now set up the equation:

x - 12 = 0

This equation represents the idea that the number of pens in the box minus the 12 pens used by the friends is equal to zero.

To solve for x, we can add 12 to both sides of the equation:

x - 12 + 12 = 0 + 12

This simplifies to:

x = 12

Therefore, there are 12 pens in the box.