Solve 5時18分-2時49分

Evaluate

5 S hi \times 18 F e n - 2 S hi \times 49 F e n

Multiply

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90 e i S h F n - 2 S hi \times 49 F e n

Multiply

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90 e i S h F n - 98 e i S h F n

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

(90 e i - 98 e i) S h F n

Solution

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- 8 e i S h F n

Simplify the expression