2a - [4b - {4a - (3b - 2a + 2b)}]
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Answer:
8a - 9b
.
Step-by-step explanation:
2a - [4b - {4a - (3b - 2a + 2b)}]
= 2a - [4b - {4a - (5b - 2a)}]
= 2a - [4b - {4a - 5b + 2a}]
= 2a - [4b - {6a - 5b}]
= 2a - [4b - 6a + 5b]
= 2a - [9b - 6a]
= 2a - 9b + 6a
= 8a - 9b
.
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