Whats not affected by the
others outcome
Answer:
X = i don't know
Y = 50°
Step-by-step explanation:
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Let a ∈ A. Then a is some integer that is divisible by 4, so we can write a = 4k for some integer k.
We can simultaneously rewrite a as a = 2•2k, so 2 clearly divides a, which means a ∈ B as well.
Therefore A ⊆ B.
