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x in (-oo:+oo)
12/8 = 54*x // - 54*x
12/8-(54*x) = 0
12/8-54*x = 0
3/2-54*x = 0 // - 3/2
-54*x = -3/2 // : -54
x = -3/2/(-54)
x = 1/36
x = 1/36
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