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2.5×2.4÷1.4＋4.8÷2.1×2.5
=2.5×﹙2.4/1.4+4.8/仿昌2.1﹚
＝2.5×24﹙1/14+2/21﹚
=2.5×4×6×1/脊信6
=10
33.33×66.66+44.44×99.99
=33.33×﹙3×22.22﹚＋备野扒44.44×99.99
=99.99×22.22+44.44×99.99
=99.99×﹙22.22+44.44﹚
=﹙100-0.01﹚×66.66
=6666-0.6666
=6665.3334
=2.5×﹙2.4/1.4+4.8/仿昌2.1﹚
＝2.5×24﹙1/14+2/21﹚
=2.5×4×6×1/脊信6
=10
33.33×66.66+44.44×99.99
=33.33×﹙3×22.22﹚＋备野扒44.44×99.99
=99.99×22.22+44.44×99.99
=99.99×﹙22.22+44.44﹚
=﹙100-0.01﹚×66.66
=6666-0.6666
=6665.3334
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