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q in (-oo:+oo)
6*q-26 = 50-((1/3)*q) // - 50-((1/3)*q)
6*q+(1/3)*q-50-26 = 0
19/3*q-76 = 0 // + 76
19/3*q = 76 // : 19/3
q = 76/19/3
q = 12
q = 12
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