60x+70(100-x)=6300

学习 时间:2026-09-26 05:06:39 阅读:8346
60x+70(100-x)=6300

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友好的云朵

难过的夏天

2026-09-26 05:06:39

60x+70(100-x)=6300 60x+7000-70x=630070x-60x=7000-630010x=700x=700÷10x=70