How do you solve [x+3y3x+y]=[−131]?
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x+9xy+y=-131
x+y+9xy-(-131)=0
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Answer:
Step-by-step explanation:
=} X+Y+3(X+Y)= -131
=} X=9 &Y= 5
=} 9-5+(3×-45)= -131
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