Worked example
Solve 4x + 3 = 23.
Answer & why
Answer: 5
Subtract 3 to get 4x = 20; divide by 4 to get x = 5.
Grade 7 · Math
Solve two-step equations
Undo addition and multiplication to isolate a variable.
8 generated examples + worked example
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8 reproducible examples from this math generator. Choose New examples for another set.
Question 1
Solve for x: 5x + 10 = 75.
- 12
- 16
- 17
- 13
A hint
Undo addition first, then multiplication, on both sides.
Answer & why
Answer: 13
Subtract 10 to get 5x = 65. Divide by 5: x = 13.
Question 2
Solve for x: 12x + 8 = 20.
- 5
- 1
- 0
- 2
A hint
Undo addition first, then multiplication, on both sides.
Answer & why
Answer: 1
Subtract 8 to get 12x = 12. Divide by 12: x = 1.
Question 3
Solve for x: 4x + 9 = 41.
- 6
- 8
- 9
- 7
A hint
Undo addition first, then multiplication, on both sides.
Answer & why
Answer: 8
Subtract 9 to get 4x = 32. Divide by 4: x = 8.
Question 4
Solve for x: 11x + 12 = 166.
- 12
- 14
- 16
- 17
A hint
Undo addition first, then multiplication, on both sides.
Answer & why
Answer: 14
Subtract 12 to get 11x = 154. Divide by 11: x = 14.
Question 5
Solve for x: 11x + 9 = 53.
- 7
- 2
- 4
- 5
A hint
Undo addition first, then multiplication, on both sides.
Answer & why
Answer: 4
Subtract 9 to get 11x = 44. Divide by 11: x = 4.
Question 6
Solve for x: 7x + 18 = 95.
- 11
- 12
- 10
- 14
A hint
Undo addition first, then multiplication, on both sides.
Answer & why
Answer: 11
Subtract 18 to get 7x = 77. Divide by 7: x = 11.
Question 7
Solve for x: 11x + 2 = 46.
- 2
- 6
- 4
- 5
A hint
Undo addition first, then multiplication, on both sides.
Answer & why
Answer: 4
Subtract 2 to get 11x = 44. Divide by 11: x = 4.
Question 8
Solve for x: 7x + 4 = 11.
- 4
- 3
- 2
- 1
A hint
Undo addition first, then multiplication, on both sides.
Answer & why
Answer: 1
Subtract 4 to get 7x = 7. Divide by 7: x = 1.