Question

- a - [ a + { a + b -2a - ( a- 2b)} -2b] ​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

$- a - [a + \{a + b - 2a - (a - 2b) \} - 2b] \\ = - a - [a + \{a + b - 2a - a + 2b \} - 2b] \\ = - a - [a + \{ - 2a + 3b \} - 2b] \\ = - a - [a - 2a + 3b - 2b] \\ = - a - [ - a + b] \\ = - a + a - b \\ = \underline{ \underline{ - b}}$

Step-by-Step Explanation:

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