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2.5-(1.2*x) = 1/3 // - 1/3
2.5-(1.2*x)-(1/3) = 0
2.5-1.2*x-1/3 = 0
2.16666667-1.2*x = 0 // - 2.16666667
-1.2*x = -2.16666667 // : -1.2
x = -2.16666667/(-1.2)
x = 1.80555556
x = 1.80555556
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