Grade 6 Equations: Two-Step with Subtraction
Solve ax - b = c
What You'll Learn
- Undo subtraction first
- Then divide
๐Two-Step
Add first, then divide!
Worked examples
Real problems from the practice worksheets, solved one step at a time.
Example 1
Solve: 7x โ 1 = 76
- Add 1 to both sides: 7x = 76 + 1 = 77.
- Divide both sides by 7: x = 77 รท 7 = 11.
- Check: 7 ร 11 โ 1 = 76 โ So x = 11.
Answer: 11
Example 2
Solve: 40 = 6m โ 14
- Flip the sides so m is on the left: 6m โ 14 = 40.
- Add 14 to both sides: 6m = 40 + 14 = 54.
- Divide both sides by 6: m = 54 รท 6 = 9.
- Check: 6 ร 9 โ 14 = 40 โ So m = 9.
Answer: 9
Example 3
Solve: 9m โ 9 = 36
- Add 9 to both sides: 9m = 36 + 9 = 45.
- Divide both sides by 9: m = 45 รท 9 = 5.
- Check: 9 ร 5 โ 9 = 36 โ So m = 5.
Answer: 5