Simply: a – [2a + b – { 2a + b – (a – b)}]
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Answer:
b
Step-by-step explanation:
a - [2a + b - { 2a + b - ( a-b)}]
a-[ 2a + b - { 2a + b - a + b}]
a - [2a + b - 2a - b + a - b ]
a - 2a - b + 2a + b - a + b
3a - 3a + 2b - b
b
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