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250/102 = 0
53/100 = 0
19500-A-B-C+26000;1.3*4*B+1.3*7*C-26000*1.3-(1.3*9*19500);1.3*4*(-A)+1.3*3*C+1.3*3*26000-(1.3*5*19500);1.3*7*(-A)-(1.3*3*B)+1.3*6*26000-(1.3*2*19500)
250/120 = 0
19500-A-B-C+26000;1.3*4*B+1.3*7*C-26000*1.3-(1.3*9*19500);1.3*4*(-A)+1.3*3*C+1.3*3*26000-(1.3*5*19500);1.3*7*(-A)-(1.3*3*B)+1.3*6*26000-(1.3*2*19500)
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