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2020-02-21 · 知道合伙人教育行家
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0.648÷(0.4+0.5)x0.6
= 0.648÷0.9x0.6
= 0.648x(0.6÷0.9)
= 0.648x2/3
= 0.648÷3×2
= 0.216×2
= 0.432
= 0.648÷0.9x0.6
= 0.648x(0.6÷0.9)
= 0.648x2/3
= 0.648÷3×2
= 0.216×2
= 0.432
追答
0.648÷(0.4+0.5)x0.6
= 0.648÷0.9x0.6
= 0.648x(0.6÷0.9)
= 0.648x2/3
= 0.648÷3×2
= 0.216×2
= 0.432
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