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-(8.3/2.3) = 3.434 // - 3.434
x-(8.3/2.3)-3.434 = 0
x-3.60869565-3.434 = 0
x-7.04269565 = 0 // + 7.04269565
x = 7.04269565
x = 7.04269565
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