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Mathematical calculation:
    Enter the mathematical formula directly and click the "Next" button to get the calculation answer.
    It supports mathematical functions (including trigonometric functions).
    Current location:Mathematical operation > History of Mathematical Computation > Answer
    Overview: 1 questions will be solved this time.Among them
           ☆1 arithmetic calculations

[1/1 Formula]
    Work: Calculate the value of equation (20+17×2.1+18.5×3+18.6×2.5+19.1×6.2+19.5×(4.81-4.3))×0.4217-2×12×0.6494 .
    Question type: Mathematical calculation
    Solution:
          (20+17×2.1+18.5×3+18.6×2.5+19.1×6.2+19.5×(4.81-4.3))×0.4217-2×12×0.6494
        =(20+17×2.1+18.5×3+18.6×2.5+19.1×6.2+19.5×0.51)×0.4217-2×12×0.6494
        =286.065×0.4217-2×12×0.6494
        =120.633611-2×12×0.6494
        =120.633611-24×0.6494
        =120.633611-15.5856
        =105.048011

    Answer:(20+17×2.1+18.5×3+18.6×2.5+19.1×6.2+19.5×(4.81-4.3))×0.4217-2×12×0.6494=105.048011


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