Question

A = {x/x  N; 6 < x < 12}
B = {x + 4/ x  Z ; 5 < x < 10}
C = {x2 + 1/ x  Z; 3 < x < 8}
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Answer 1

Explicación paso a paso:

A= 7,8,9,10,11

B= x= 6,7,8,9. x+4. B= 10,11,12,13

C= x= 4,5,6,7. x/2+1/x C=9/4,27/10,19/6,25/7