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g in (-oo:+oo)
(9*(5*g+4))/4 = 99 // - 99
(9*(5*g+4))/4-99 = 0
(9*(5*g+4))/4+(-99*4)/4 = 0
9*(5*g+4)-99*4 = 0
45*g-360 = 0
(45*g-360)/4 = 0
(45*g-360)/4 = 0 // * 4
45*g-360 = 0
45*g-360 = 0 // + 360
45*g = 360 // : 45
g = 360/45
g = 8
g = 8
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