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-(2/5) = 0.6 // - 0.6
x-(2/5)-0.6 = 0
x-2/5-0.6 = 0
x-1 = 0 // + 1
x = 1
x = 1
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