Solve equations of the form x + a = b, x − a = b, ax = b, and x/a = b using inverse operations — with a full step-by-step walkthrough and answer verification.
x + a = b → x = b − a
A one-step equation has exactly one operation applied to the variable. To isolate x — get it alone on one side — you undo that operation using its inverse.
The golden rule: whatever you do to one side of the equation, you must do to the other. This keeps the equation balanced, like a scale. Apply the inverse operation to both sides and x is revealed.
Because you only need one inverse step, these are called one-step equations — the foundation of all algebraic equation solving.
A tutor can show you the pattern behind every equation type — so you'll recognize what to do the moment you see one, no matter how many steps it takes.