2/5×-3/7-1/14-3/7×3/5
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Answer:
2/5×-3/7-1/14-3/7×3/5
=0.4*0.428-0.071-0.428*0.6
=0.1712-0.071-0.428*0.6
=0.1712-0.071-0.2568
=0.1712-0.3278
= -0.1566
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