Description: 6 times 2 equals 12. (Contributed by Mario Carneiro, 19-Apr-2015)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | 6t2e12 | ⊢ ( 6 · 2 ) = ; 1 2 | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | 6cn | ⊢ 6 ∈ ℂ | |
| 2 | 1 | times2i | ⊢ ( 6 · 2 ) = ( 6 + 6 ) | 
| 3 | 6p6e12 | ⊢ ( 6 + 6 ) = ; 1 2 | |
| 4 | 2 3 | eqtri | ⊢ ( 6 · 2 ) = ; 1 2 |