Solve 12时36分-7时50分

Evaluate

12 S hi \times 36 F e n - 7 S hi \times 50 F e n

Multiply

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432 e i S h F n - 7 S hi \times 50 F e n

Multiply

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432 e i S h F n - 350 e i S h F n

Collect like terms by calculating the sum or difference of their coefficients

(432 e i - 350 e i) S h F n

Solution

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82 e i S h F n

Simplify the expression