If it's not what You are looking for type in the equation solver your own equation and let us solve it.
a in (-oo:+oo)
a = ((1/2)^1)/14.9 // - ((1/2)^1)/14.9
a-(((1/2)^1)/14.9) = 0
a-0.03355705 = 0
a-0.03355705 = 0 // + 0.03355705
a = 0.03355705
a = 0.03355705
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