ECZ 2017 · O-Level Paper 1 — Algebra
Simplify 3x − (y − 2x) − 3y.
- A. x − 4y
- B. x − 2y
- C. 5x − 4y
- D. 5x − 2y
Verified working — step 1
Remove the bracket, flipping every sign inside: 3x − y + 2x − 3y. Then collect like terms: (3x + 2x) + (−y − 3y) = …The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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