Metamath Proof Explorer


Theorem 7t2e14

Description: 7 times 2 equals 14. (Contributed by Mario Carneiro, 19-Apr-2015)

Ref Expression
Assertion 7t2e14 72=14

Proof

Step Hyp Ref Expression
1 7cn 7
2 1 times2i 72=7+7
3 7p7e14 7+7=14
4 2 3 eqtri 72=14