Simplify the given expression.
b + 2a - [(3b + a) - (2a + b) + 2a] - a
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. - b.
b + 2a - [(3b + a) - (2a + b) + 2a] - a
⇒ b + 2a - [3b + a - 2a - b + 2a] - a
⇒ b + 2a - [2b + a] - a
⇒ b + 2a - 2b - a - a
⇒ b + 2a - 2b - 2a
⇒ -b