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