Description: Deduction adding a conjunct to antecedent. (Contributed by Glauco Siliprandi, 11-Dec-2019)
Ref | Expression | ||
---|---|---|---|
Hypothesis | 3adantlr3.1 | ||
Assertion | 3adantlr3 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3adantlr3.1 | ||
2 | simpll | ||
3 | simplr1 | ||
4 | simplr2 | ||
5 | 3 4 | jca | |
6 | simpr | ||
7 | 2 5 6 1 | syl21anc |