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Explicación paso a paso:
1)
"x" debe estar entre el intervalo señalado:
x = 3
x + 1 = 4
x = 4
x + 1 = 5
x = 5
x + 1 = 6
x = 6
x + 1 = 7
x = 7
x + 1 = 8
x = 8
x + 1 = 9
Conjunto por comprensión:
Suma de números impares: