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x in (-oo:+oo)
(7*(9/4)*x)/2 = -1/16 // + -1/16
(7*(9/4)*x)/2-(-1/16) = 0
(7*(9/4)*x)/2+1/16 = 0
63/8*x+1/16 = 0 // - 1/16
63/8*x = -1/16 // : 63/8
x = -1/16/63/8
x = -1/126
x = -1/126
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