(0.2x+0.2x+120)*2+100=x 怎么解
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![(0.2x+0.2x+120)*2+100=x 怎么解](/uploads/image/z/327369-57-9.jpg?t=%280.2x%2B0.2x%2B120%29%2A2%2B100%3Dx+%E6%80%8E%E4%B9%88%E8%A7%A3)
(0.2x+0.2x+120)*2+100=x 怎么解
(0.2x+0.2x+120)*2+100=x 怎么解
(0.2x+0.2x+120)*2+100=x 怎么解
(0.2x+0.2x+120)*2+100=x
0.8x+240+100=x
x-0.8x=340
0.2x=340
x=1700
(0.2x+0.2x+120)*2+100=x
(0.4x+120)*2+100=x
0.8x+240+100=x
0.8x+340=x
x-0.8x=340
0.2x=340
x=1700