(0.265×86/27+86/27×(0.735×54)=5 5 (0.265×3 27+3 27×(0.735×54)=

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(0.265×86/27+86/27×(0.735×54)=
5 5
(0.265×3 27+3 27×(0.735×54)=

13065.285