Description: 8 times 5 equals 40. (Contributed by Mario Carneiro, 19-Apr-2015) (Revised by AV, 6-Sep-2021)
Ref | Expression | ||
---|---|---|---|
Assertion | 8t5e40 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 8nn0 | |
|
2 | 4nn0 | |
|
3 | df-5 | |
|
4 | 8t4e32 | |
|
5 | 3nn0 | |
|
6 | 2nn0 | |
|
7 | eqid | |
|
8 | 3p1e4 | |
|
9 | 8cn | |
|
10 | 2cn | |
|
11 | 8p2e10 | |
|
12 | 9 10 11 | addcomli | |
13 | 5 6 1 7 8 12 | decaddci2 | |
14 | 1 2 3 4 13 | 4t3lem | |