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(x-7)/14 = 1-((2/3)*x) // - 1-((2/3)*x)
(x-7)/14+(2/3)*x-1 = 0
(x-7)/14+(2*x)/3-1 = 0
(3*(x-7))/(3*14)+(2*14*x)/(3*14)+(-1*3*14)/(3*14) = 0
3*(x-7)+2*14*x-1*3*14 = 0
31*x-42-21 = 0
31*x-63 = 0
(31*x-63)/(3*14) = 0
(31*x-63)/(3*14) = 0 // * 3*14
31*x-63 = 0
31*x-63 = 0 // + 63
31*x = 63 // : 31
x = 63/31
x = 63/31
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