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x in (-oo:+oo)
x/8+1.1 = -11.7 // + 11.7
x/8+1.1+11.7 = 0
1/8*x+12.8 = 0 // - 12.8
1/8*x = -12.8 // : 1/8
x = -12.8/1/8
x = -102.4
x = -102.4
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