Simplify: [0.9 - {2.3 -3.2 - (7.1 -5.4 - 3.5)}]
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Answer:
[0.9-{2.3-3.2-(7.1-5.4-3.5)}]
=[0.9-{2.3-3.2-(7.1-8.9)}]
=[0.9-{2.3-3.2-(-1.8)}]
=[0.9-{2.3-3.2+1.8}]
=[0.9-{(2.3+1.8)-3.2}]
=[0.9-{4.1-3.2}]
=[0.9-0.9]
=0
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