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x in (-oo:+oo)
2*x+8 = 41/5 // - 41/5
2*x-(41/5)+8 = 0
2*x-41/5+8 = 0
2*x-1/5 = 0 // + 1/5
2*x = 1/5 // : 2
x = 1/5/2
x = 1/10
x = 1/10
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