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x in (-oo:+oo)
x/8 = 2.7 // - 2.7
x/8-2.7 = 0
1/8*x-2.7 = 0 // + 2.7
1/8*x = 2.7 // : 1/8
x = 2.7/1/8
x = 21.6
x = 21.6
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