有解方程化简比求比值今天内我要有到最佳答案小x是未知数 大X=乘解方程:30%x=120 x+1/5x=240 x-60%x=160 50%-33%x=34 120x-20x=40 x+130%=460 45-30%x=24 1.2X5+50%x=7.8 75%x-50=25 x-15%x=8.5 21:x=18 x/6=4.8 1.2:x=4/5:7化简比
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![有解方程化简比求比值今天内我要有到最佳答案小x是未知数 大X=乘解方程:30%x=120 x+1/5x=240 x-60%x=160 50%-33%x=34 120x-20x=40 x+130%=460 45-30%x=24 1.2X5+50%x=7.8 75%x-50=25 x-15%x=8.5 21:x=18 x/6=4.8 1.2:x=4/5:7化简比](/uploads/image/z/1083350-38-0.jpg?t=%E6%9C%89%E8%A7%A3%E6%96%B9%E7%A8%8B%E5%8C%96%E7%AE%80%E6%AF%94%E6%B1%82%E6%AF%94%E5%80%BC%E4%BB%8A%E5%A4%A9%E5%86%85%E6%88%91%E8%A6%81%E6%9C%89%E5%88%B0%E6%9C%80%E4%BD%B3%E7%AD%94%E6%A1%88%E5%B0%8Fx%E6%98%AF%E6%9C%AA%E7%9F%A5%E6%95%B0+%E5%A4%A7X%3D%E4%B9%98%E8%A7%A3%E6%96%B9%E7%A8%8B%3A30%25x%3D120+x%2B1%2F5x%3D240+x-60%25x%3D160+50%25-33%25x%3D34+120x-20x%3D40+x%2B130%25%3D460+45-30%25x%3D24+1.2X5%2B50%25x%3D7.8+75%25x-50%3D25+x-15%25x%3D8.5+21%3Ax%3D18+x%2F6%3D4.8+1.2%3Ax%3D4%2F5%3A7%E5%8C%96%E7%AE%80%E6%AF%94)
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