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)
x = (2/3)*x // - (2/3)*x
x-((2/3)*x) = 0
x+(-2/3)*x = 0
1/3*x = 0 // : 1/3
x = 0
x = 0
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