SOLUTION: simplify 7a-{(2ab+b-5)-[(-3a+5ab-1)+(3a+2b-ab)]}

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Question 762178: simplify 7a-{(2ab+b-5)-[(-3a+5ab-1)+(3a+2b-ab)]}
Answer by Cromlix(4381) About Me  (Show Source):
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7a-{(2ab+b-5)-[(-3a+5ab-1)+(3a+2b-ab)]}
7a-{2ab + b - 5 + 3a - 5ab + 1 + 3a + 2b - ab}
7a-{6a + 3b - 4ab -4}
7a - 6a - 3b + 4ab + 4
-a - 3b + 4ab + 4