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x in (-oo:+oo)
(x+6)/6 = x/5.25 // - x/5.25
(x+6)/6-(x/5.25) = 0
(x+6)/6-0.19047619*x = 0
(x+6)/6+(-0.19047619*6*x)/6 = 0
x-0.19047619*6*x+6 = 0
6-0.14285714*x = 0
(6-0.14285714*x)/6 = 0
(6-0.14285714*x)/6 = 0 // * 6
6-0.14285714*x = 0
6-0.14285714*x = 0 // - 6
-0.14285714*x = -6 // : -0.14285714
x = -6/(-0.14285714)
x = 42.00000084
x = 42.00000084
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