Question

Prove:
If \( C \subset A \) and \( D \subset B \) then \( D - A \subset B-C \)

Answer 1

Hey samjordon

Answer 2

u busy

Answer 3

Let x be an elm D-A then x is elm D and x not-elm of A Since x is not elm A x is not elm of C because c is subset of A and since x is elm of D x is an elm of B. Thus x is an elm of B-c

Answer 4

YAYYYYYYYY THAT WAS AwESEOME

Answer 5

maybe one more line before the last ..So x is an elm b and not an elm of C. thus...

Answer 6

ya that trash but I like ur proof its clear

Answer 7

good deal:)