Solve one-step equations

An equation is a balance. Whatever you do to one side, do to the other to keep it level.

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Look at what is done to x.
Do the opposite to both sides: undo adding by subtracting, undo multiplying by dividing.
x is left on its own.

x + 5 = 12

Take 5 off both sides

x = 7

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Check by putting your answer back in: 5 + 7 = 12 ✓

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