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p in (-oo:+oo)
3*p-(3/4) = 51/4 // - 51/4
3*p-(3/4)-(51/4) = 0
3*p-3/4-51/4 = 0
3*p-27/2 = 0 // + 27/2
3*p = 27/2 // : 3
p = 27/2/3
p = 9/2
p = 9/2
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