6 lines
149 B
Text
6 lines
149 B
Text
exit
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import data.nat
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open nat
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example (a b c : nat) (h₁ : a + 0 = b) (h₂ : b = c) : a = c :=
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by esimp at h₁; rewrite h₂ at h₁; exact h₁
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