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x = 128-((129/3-(x/3))/2) // - 128-((129/3-(x/3))/2)
(129/3-(x/3))/2+x-128 = 0
(43-1/3*x)/2+x-128 = 0
(43-1/3*x)/2+(2*x)/2+(-128*2)/2 = 0
2*x-1/3*x-128*2+43 = 0
5/3*x-256+43 = 0
5/3*x-213 = 0
(5/3*x-213)/2 = 0
(5/3*x-213)/2 = 0 // * 2
5/3*x-213 = 0
5/3*x-213 = 0 // + 213
5/3*x = 213 // : 5/3
x = 213/5/3
x = 639/5
x = 639/5
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