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Year 7 maths · O.5 · One-step and two-step equations

Two-step equations with negative numbers

Undo the adding or subtracting first, then undo the multiplying or dividing.

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See worked examples
  1. Solve for x: 3x + 6 = 12

    Answer: 2

  2. Solve for x: 4x + 5 = −23

    Answer: -7

  3. Solve for x: −5x − 5 = −20

    Answer: 3

Tip: Undo the adding or subtracting first, then undo the multiplying or dividing.

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