x-60%x+28=50%x-9
x-0.6x+28=0.5x-9
0.4x+28=0.5x-9
0.5x-0.4x=28+9
0.1x=37
x=370
x-60%x+28=50%x-9 解方程
x-60%x+28=50%x-9 解方程
數(shù)學(xué)人氣：807 ℃時(shí)間：2020-02-03 21:05:54
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