(2/3-1/12-1/15)×(-60)计算结果与过程?

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(2/3-1/12-1/15)×(-60)计算结果与过程?

(2/3-1/12-1/15)×(-60)计算结果与过程?
(2/3-1/12-1/15)×(-60)计算结果与过程?

(2/3-1/12-1/15)×(-60)计算结果与过程?
(2/3-1/12-1/15)×(-60) 原式=(2/3×-60)-(1/12×-60)-(1/15×-60) =-40+5+4 =-31