Interactive resource
Properties of equality (balance)
Algebra. A balance model for adding/subtracting/multiplying/dividing both sides to isolate x. Free interactive GeoGebra resource — adjust parameters in the…
Overview
A balance model for adding/subtracting/multiplying/dividing both sides to isolate x.
Explanation
Equality stays true if you add/subtract the same number on both sides, or multiply/divide by the same nonzero number.
Solving is repeatedly applying these moves until you reach “x = a number”.
Balance picture: do the same to both pans and it stays level.
How to use
Use the buttons to act on both sides and isolate x step by step.