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x in (-oo:+oo)
x+x+1/4 = 25 // - 25
x+x+1/4-25 = 0
2*x-99/4 = 0 // + 99/4
2*x = 99/4 // : 2
x = 99/4/2
x = 99/8
x = 99/8
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