Question
From the sum of 3a – 2b + 4c and 3b – 2c subtract a – b – c.

Answer

(3a – 2b + 4c) + (3b – 2c) – (a – b – c)
= 3a – 2b + 4c + 3b – 2c – a + b + c
= 3a – a + 3b + b – 2b + 4c + c – 2c
= 2a + 2b + 3c

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free