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(0.2*x-0.1)/5 = 3*(x-0.5) // - 3*(x-0.5)
(0.2*x-0.1)/5-(3*(x-0.5)) = 0
(0.2*x-0.1)/5-3*(x-0.5) = 0
(0.2*x-0.1)/5+(-3*5*(x-0.5))/5 = 0
0.2*x-3*5*(x-0.5)-0.1 = 0
7.4-14.8*x = 0
(7.4-14.8*x)/5 = 0
(7.4-14.8*x)/5 = 0 // * 5
7.4-14.8*x = 0
7.4-14.8*x = 0 // - 7.4
-14.8*x = -7.4 // : -14.8
x = -7.4/(-14.8)
x = 0.5
x = 0.5
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