U={1,2,3,4,5,6,7,8,9}a={1,3,6,8}b={2,4,6,7}verify that (a∩b)ᶜ=aᶜ∪bᶜ

This question was asked in Ex 1.5, 7

u={1,2,3,4,5,6,7,8,9}
a={1,3,6,8}
b={2,4,6,7}
verify that (a∩b)ᶜ=aᶜ∪bᶜ