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1.4*x-(2/1.4) = 2.8*x // - 2.8*x
1.4*x-(2.8*x)-(2/1.4) = 0
1.4*x-2.8*x-1.42857143 = 0
-1.4*x-1.42857143 = 0 // + 1.42857143
-1.4*x = 1.42857143 // : -1.4
x = 1.42857143/(-1.4)
x = -1.02040816
x = -1.02040816
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