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Theorem rbaibr 899
Description: Move conjunction outside of biconditional. (Contributed by Mario Carneiro, 11-Sep-2015.)
Hypothesis
Ref Expression
baib.1
Assertion
Ref Expression
rbaibr

Proof of Theorem rbaibr
StepHypRef Expression
1 baib.1 . . 3
2 ancom 450 . . 3
31, 2bitri 249 . 2
43baibr 897 1
Colors of variables: wff setvar class
Syntax hints:  ->wi 4  <->wb 184  /\wa 369
This theorem is referenced by:  ssunsn2  4149  cmpfi  19410  sdrgacs  30018
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8
This theorem depends on definitions:  df-bi 185  df-an 371
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