5.7×0.00036-(0.19×0.006-5700×0.000000164)
=3×1.9×0.00036-1.9×0.0006+3×1.9×0.000164
=1.9×（0.00108-0.0006+0.000492）
=1.9×0.000972
=0.0018468
5.7×0.00036-(0.19×0.006-5700×0.000000164)如何解谁知道过程
1个回答
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