1.6×(-1又4/5)×(-2.5)×(-3/8),
1个回答
1.6×(-1又4/5)×(-2.5)×(-3/8)
=-8/5×9/5×5/2×3/8
=-8/5×3/8×9/5×5/2
=-3/5×9/2
=-2.7
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