x+40%=2x-3
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![x+40%=2x-3](/uploads/image/z/3762091-19-1.jpg?t=x%2B40%25%3D2x-3)
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x+40%=2x-3
x+40%=2x-3
x+40%=2x-3
两边同时乘以10,得
10x+4=20x-30
移项,得
10x-20x= -30-4
即 -10x= -34
解得x=3.4
x{x+1}{x-1}}x-2}{x-3}-40
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