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First Year maths · O.4 · One-step and two-step equations

Two-step equations with positive numbers

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

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  1. Solve for x: 3x + 10 = 31

    Answer: 7

  2. Solve for x: 3x + 1 = 19

    Answer: 6

  3. Solve for x: 5x + 1 = 36

    Answer: 7

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

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