Explicación paso a paso:
Por extensión, tenemos que:
A = {4; 5; 6; 7}
B = {2; 3; 4}
C = {7; 8}
D = {7; 8; 9}
A - B = {5; 6; 7}
B - C = { }
(A ∪ B) - (C ∩ D) = {2; 3; 4; 5; 6; 7} - {7; 8} = {2; 3; 4; 5; 6}
C - D = { }
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Explicación paso a paso:
Por extensión, tenemos que:
A = {4; 5; 6; 7}
B = {2; 3; 4}
C = {7; 8}
D = {7; 8; 9}
A - B = {5; 6; 7}
B - C = { }
(A ∪ B) - (C ∩ D) = {2; 3; 4; 5; 6; 7} - {7; 8} = {2; 3; 4; 5; 6}
C - D = { }