630-x+2/5x=4x等于?
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630-x+2/5x=4x等于?
![630-x+2/5x=4x等于?](/uploads/image/z/4885215-15-5.jpg?t=630-x%2B2%2F5x%3D4x%E7%AD%89%E4%BA%8E%3F)
630-x+2/5x=4x
630-3/5x=4x
4x+3/5x=630
23/5x=630
x=630*5/23
x=3150/23
630-3/5x=4x
4x+3/5x=630
23/5x=630
x=630*5/23
x=3150/23
630-x+2/5x=4x等于?
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