About this worksheet
Solve for x in a single move — undo one of +, −, ·, or ÷ to isolate the variable.
- Arithmetic facts in the operations you turn on.
- Understand that a letter like x is a placeholder for an unknown number.
- Recognize that addition undoes subtraction, multiplication undoes division.
With mastery, the student learns
- Isolate x by applying the inverse of the operation acting on it.
- Keep the equation balanced — whatever you do on one side, do on the other.
- Read four equation forms: x + b = c, x − b = c, a · x = c, x ÷ a = c.