These are algebraic equations that can be solved in a single step using either addition or subtraction.

The objective is to isolate the variable (usually represented by 'x') on one side of the equation.

To solve equations like 'x + 5 = 12,' subtract 5 from both sides to find 'x = 7.'

For equations like 'x - 8 = 3,' add 8 to both sides to discover 'x = 11.'

Solve '2x + 3 = 9.' Subtract 3 from both sides: '2x = 6.' Divide by 2: 'x = 3.'

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