Grade 6 Equations: Two-Step with Subtraction

Solve ax - b = c

What You'll Learn

  • Undo subtraction first
  • Then divide

๐Ÿ“–Two-Step

Add first, then divide!

Worked examples

Real problems from the practice worksheets, solved one step at a time.

  1. Example 1

    Solve: 7x โˆ’ 1 = 76

    1. Add 1 to both sides: 7x = 76 + 1 = 77.
    2. Divide both sides by 7: x = 77 รท 7 = 11.
    3. Check: 7 ร— 11 โˆ’ 1 = 76 โœ“ So x = 11.

    Answer: 11

  2. Example 2

    Solve: 40 = 6m โˆ’ 14

    1. Flip the sides so m is on the left: 6m โˆ’ 14 = 40.
    2. Add 14 to both sides: 6m = 40 + 14 = 54.
    3. Divide both sides by 6: m = 54 รท 6 = 9.
    4. Check: 6 ร— 9 โˆ’ 14 = 40 โœ“ So m = 9.

    Answer: 9

  3. Example 3

    Solve: 9m โˆ’ 9 = 36

    1. Add 9 to both sides: 9m = 36 + 9 = 45.
    2. Divide both sides by 9: m = 45 รท 9 = 5.
    3. Check: 9 ร— 5 โˆ’ 9 = 36 โœ“ So m = 5.

    Answer: 5