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4.6×3÷0.7X=29.9 13.8÷0.7X=29.9 所以0.7X=13.8/29.9 X=13.8÷29.9÷0.7 X=1380/2093 ------------------------------------------- 採納是我前進的動力!如果您覺得滿意,可以點擊“採納為滿意答案”哦!
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