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(2/7)*x-(4*x)+2/3 = -8/105 // + -8/105
(2/7)*x-(4*x)+2/3-(-8/105) = 0
(2/7)*x-4*x+2/3+8/105 = 0
26/35-26/7*x = 0 // - 26/35
-26/7*x = -26/35 // : -26/7
x = -26/35/(-26/7)
x = 1/5
x = 1/5
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