Answer:
2,880
Step-by-step explanation:
La facturación en primas sería de 2,880
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x= -1; y= -2
A: 6x+4y= -14
B: -x-5y=11
6B is : -6x-30y=66
A+6B is : -26y=52
so y= -2
so A becomes : 6x+4.(-2)= -14
so x= -1