x minus 3 = 21 step by step

Answer 1

To solve the equation \( x - 3 = 21 \) step by step, follow these instructions:

1. Start with the equation: \[ x - 3 = 21 \]

2. Add 3 to both sides of the equation:
   This will help isolate \( x \) on one side. \[ x - 3 + 3 = 21 + 3 \]

3. Simplify both sides: \[ x = 24 \]

4. Conclusion:
   The solution to the equation is \[ x = 24 \]

You can check your work by substituting \( x = 24 \) back into the original equation: \[ 24 - 3 = 21 \] This statement is true, confirming that \( x = 24 \) is correct.