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T in (-oo:+oo)
T/8 = 2/9 // - 2/9
T/8-(2/9) = 0
T/8-2/9 = 0
1/8*T-2/9 = 0 // + 2/9
1/8*T = 2/9 // : 1/8
T = 2/9/1/8
T = 16/9
T = 16/9
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