Question 517668: A={3x: x ∈ N}
B={x+7: x ∈ N)
C={3x+21: x∈ N)
Prove AnB⊆C and C⊆AnB. (n=intersect). If false explain why it does not hold.
Answer by Gogonati(855)   (Show Source):
You can put this solution on YOUR website! A≴B, A∐B, A∎B, x∌y, x∉y, x∈y, x∇y
x∆y, x∅y, xℹy, x↢y, x≪y, x≥y, x≦y
x≧y, x≨y, x≩y, x≪y, x≫y, x≬y, x≭y
x≡y, x≢y, x≣y, x≤y, x⇼y, x∁y, x⇿y
xy, xϩy, xߑy, xಌy, xᇊy, xᎉy, xᖩy
x᪔y, xṽy, xṺy, xṼy, xṾy, xṿy, xờy
xὁy, xᾩy, x y, xy, ab, xy, xy
x∃y, x∂y, x∄y, x∅y, x∈y, x∉y, x∊y
x∋y, x∌y, x∍y, x∎y, x∏y, x∐y, x∑y
∑B
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