Equations
An equation is a balance — do the same to both sides to keep it level.
Finding unknown valuesSolving equationsForming equationsUnknowns on both sides
📖 Learn
Inverse operations
+ undoes −, × undoes ÷.
Balance
Whatever you do to one side, do to the other.
Both sides
Move the smaller x-term over first, then solve.
Worked example
Solve 3x + 5 = 20
- 1Subtract 5 from both sides: 3x = 15
- 2Divide both sides by 3
- 3x = 5 ✅
⭐ Practise
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