X + X + 3 = (10X + X + 3)/4 怎么算.
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X + X + 3 = (10X + X + 3)/4 怎么算.
![X + X + 3 = (10X + X + 3)/4 怎么算.](/uploads/image/z/19610801-17-1.jpg?t=X+%2B+X+%2B+3+%3D+%2810X+%2B+X+%2B+3%29%2F4+%E6%80%8E%E4%B9%88%E7%AE%97.)
4x+4x+12=10x+x+3
8x+12=11x+3
9=3x
x=3
8x+12=11x+3
9=3x
x=3
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