Author note — to cover

Solve equations like 3x + 5 = 17 and x/4 − 2 = 1 by undoing operations in reverse order, keeping the balance; include negative and fractional solutions and forms like 10 − 2x = 4. Brackets, fractions around expressions, and unknowns on both sides are the sibling pages. Both tiers. (A17)

• Fluency — direct questions on solving two-step equations, limited to this lesson's stated scope (4 questions).
• Application — use the same skill in unfamiliar or contextual questions without introducing a later method (4 questions).
• Check — questions built around the exclusions and likely misconceptions named in the lesson brief (4 questions).