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(5-(2*x))/5+(x-4)/10 = 3/10 // - 3/10
(5-(2*x))/5+(x-4)/10-(3/10) = 0
(5-2*x)/5+(x-4)/10-3/10 = 0
(10*(5-2*x))/(5*10)+(5*(x-4))/(5*10)+(-3*5)/(5*10) = 0
10*(5-2*x)+5*(x-4)-3*5 = 0
30-15*x-15 = 0
15-15*x = 0
(15-15*x)/(5*10) = 0
(15-15*x)/(5*10) = 0 // * 5*10
15-15*x = 0
15-15*x = 0 // - 15
-15*x = -15 // : -15
x = -15/(-15)
x = 1
x = 1
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