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j in (-oo:+oo)
j/5.8 = 3/8.7 // - 3/8.7
j/5.8-(3/8.7) = 0
j/5.8-0.34482759 = 0
0.17241379*j-0.34482759 = 0 // + 0.34482759
0.17241379*j = 0.34482759 // : 0.17241379
j = 0.34482759/0.17241379
j = 2.00000006
j = 2.00000006
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