ECZ 2019 · GCE Paper 1 — Algebra
Simplify 4 − 2(b − a) − 1.
- A. 2a − 2b + 3
- B. 2a + 2b + 3
- C. −2a − 2b + 3
- D. 2a − 2b − 5
Verified working — step 1
Expand the bracket, keeping the minus with the 2: −2(b − a) = −2b + 2a. Then collect the numbers: 4 − 1 = …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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