If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
v = x-(y/z) // - x-(y/z)
v-x+y/z = 0
v-x+y*z^-1 = 0 // - v+y*z^-1
-x = -(v+y*z^-1) // * -1
x = v+y*z^-1
x = v+y*z^-1
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