Find the union of two sets

A={2,4,6,9} and B={3,8,9,12}

[wesleyem]

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[shayleecox]

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[AmyNoelonDyslexia]

So quick and simple. Thank you! I am helping my fifth grader with his homework.

[beanchronicles]

Thank you this was very helpful for my final exam review

[joshualowney]

I'm in 7th grade pre algebra should I be able to fully understand it?

[febafernandez]

if a(a, b, c, d, e) b=(a, c, e, q) c=(b, e, f, q) verify that (aub) n c =(anc)u (bnc) and (a n b )uc=(auc) n(buc)
Can u prove this please

[ZainAli-ezyz]

int arr1[] = {1, 2, 2, 4, 5, 6};
int arr2[] = {2, 2, 3, 5, 7};
Whats the union of these sets?