50.99-17.11+39.01-23.89怎么巧算?

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50.99-17.11+39.01-23.89怎么巧算?50.99-17.11+39.01-23.89怎么巧算?50.99-17.11+39.01-23.89怎么巧算?50.99-17.11+39.0

50.99-17.11+39.01-23.89怎么巧算?
50.99-17.11+39.01-23.89怎么巧算?

50.99-17.11+39.01-23.89怎么巧算?
50.99-17.11+39.01-23.89
=(50.99+39.01)-(17.11+23.89)
=90-41
=49
祝开心

50.99-17.11+39.01-23.89
=(50.99+39.01)-(17.11+23.89)
=90-41
=49
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(51-0.01)-(17+0.11)+(39+0.1)-(24-0.11)