Respuesta :

So to find x, you have to add both A and B which is 38. Since AuB (excluding the overlap) is 29, subtract 38 from 29 and you get 9 for x.

Answer:

x =9

Step-by-step explanation:

A [tex]\cup[/tex] B =29

-->A = 29 -17 = 12

-->B = 29 -21 = 8

x=A [tex]\cap[/tex] B =A [tex]\cup[/tex] B - A - B= 29 - 12 - 8 = 9

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