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4 = ((1.2^2)/1.32)*(x-12) // - ((1.2^2)/1.32)*(x-12)
4-(((1.2^2)/1.32)*(x-12)) = 0
4-0.75757576*1.2^2*(x-12) = 0
4-0.75757576*1.2^2*(x-12) = 0
9.09090912*1.2^2-0.75757576*1.2^2*x+4 = 0
9.09090912*1.2^2-0.75757576*1.2^2*x+4 = 0
9.09090912*1.2^2-0.75757576*1.2^2*x+4 = 0 // - 9.09090912*1.2^2+4
-0.75757576*1.2^2*x = -(9.09090912*1.2^2+4) // : -0.75757576*1.2^2
x = (-(9.09090912*1.2^2+4))/(-0.75757576*1.2^2)
x = 1.32*(9.09090912*1.2^2+4)*1.2^-2
x = 1.32*(9.09090912*1.2^2+4)*1.2^-2
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