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(x+38.9)/6 = 8 // - 8
(x+38.9)/6-8 = 0
(x+38.9)/6+(-8*6)/6 = 0
x-8*6+38.9 = 0
x-9.1 = 0
(x-9.1)/6 = 0
(x-9.1)/6 = 0 // * 6
x-9.1 = 0
x-9.1 = 0 // + 9.1
x = 9.1
x = 9.1
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