x
- = 12
3
x-3=12..is that what you meant?
Add 3 to each side to get x alone on one side, and you get x=15.
x/3 = 12
Multiply both sides of the equation by 3.
x = 36
Not so, Marie.
Substitute your answer, 15, for x.
15/3 does not equal 12.
Ms. Sue, I thought the problem was x minus 3 equals 12, so I apologize.
To find the value of x in the equation x - 3 = 12, you can use a method called "isolation" or "solving for x". The goal is to manipulate the equation so that x is alone on one side of the equation.
Here are the steps to solve for x:
1. Start with the equation: x - 3 = 12.
2. The first step is to isolate x by moving the constant term (-3) to the other side of the equation. You can do this by adding 3 to both sides of the equation:
x - 3 + 3 = 12 + 3.
Simplifying, you get:
x = 15.
Therefore, the solution to the equation x - 3 = 12 when x = 3 is 15.