X/Y=Z Z*Y+X=150 X=?
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X/Y=Z Z*Y+X=150 X=?
![X/Y=Z Z*Y+X=150 X=?](/uploads/image/z/3104827-43-7.jpg?t=X%2FY%3DZ+Z%2AY%2BX%3D150+X%3D%EF%BC%9F)
X/Y=Z 两边同时乘以Y 得到 X=Y*Z
如果Z*Y+X=150 那么就相当于X+X=150
X=75
如果Z*Y+X=150 那么就相当于X+X=150
X=75
(x+y-z)(x-y+z)=
X+Y+Z=?
f(x,y,z,w)=x*(x+y)*(x+y+z)*(x+y+z+w)
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