1/x-1/9x-20=1怎么解
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![1/x-1/9x-20=1怎么解](/uploads/image/z/5869210-58-0.jpg?t=1%2Fx-1%2F9x-20%3D1%E6%80%8E%E4%B9%88%E8%A7%A3)
1/x-1/9x-20=1怎么解
1/x-1/9x-20=1怎么解
1/x-1/9x-20=1怎么解
9/9x - 1/9x -20 = 1
8/9x - 20 =1
8/9x = 1 + 20
8/9x = 21
8 = 9x * 21
8 = 189x
x = 8 / 189
猪
解;1/x-1/9x-20=1
即9/9x-1/9x-20=1
即8/9x=21
8/21=9x
x=8/189