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 = 11.3 // - 11.3
x/2-11.3 = 0
1/2*x-11.3 = 0 // + 11.3
1/2*x = 11.3 // : 1/2
x = 11.3/1/2
x = 22.6
x = 22.6
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