Description: Adding both side of two inequalities. (Contributed by NM, 16-Sep-1999)
Ref | Expression | ||
---|---|---|---|
Hypotheses | lt2.1 | |
|
lt2.2 | |
||
lt2.3 | |
||
lt.4 | |
||
Assertion | le2addi | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | lt2.1 | |
|
2 | lt2.2 | |
|
3 | lt2.3 | |
|
4 | lt.4 | |
|
5 | le2add | |
|
6 | 1 2 3 4 5 | mp4an | |