A={x∈Z||x|<6},B={1,2,3},C={3,4,5,6},求A∪(B∩C)B∩C={3}A={x∈Z||x|<6}={-5,-4,-3,-2,-1,0,1,2,3,4,5}A∪(B∩C)=A={x∈Z||x|<6}={-5,-4,-3,-2,-1,0,1,2,3,4,5}
{-5,-4,-3,-2,-1,0,1,2,3,4,5,}
首先,-6B交C于3 ,所以说A∪(B∩C)=A