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x in (-oo:+oo)
3/8 = x/24 // - x/24
3/8-(x/24) = 0
3/8-1/24*x = 0 // - 3/8
-1/24*x = -3/8 // : -1/24
x = -3/8/(-1/24)
x = 9
x = 9
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