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14.8×6.3-6.3×6.5+8.3×3.7 =(14.8-6.5)×6.3+8.3×3.7 =8.3×6.3+8.3×3.7 =8.3×(6.3+3.7) =8.3×10 =83 明白請採納, 有新問題請求助,
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