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Theorem breqtrri 4157
Description: Substitution of equal classes into a binary relation. (Contributed by NM, 5-Aug-1993.)
Hypotheses
Ref Expression
breqtrr.1 𝐴𝑅𝐵
breqtrr.2 𝐶 = 𝐵
Assertion
Ref Expression
breqtrri 𝐴𝑅𝐶

Proof of Theorem breqtrri
StepHypRef Expression
1 breqtrr.1 . 2 𝐴𝑅𝐵
2 breqtrr.2 . . 3 𝐶 = 𝐵
32eqcomi 2242 . 2 𝐵 = 𝐶
41, 3breqtri 4155 1 𝐴𝑅𝐶
Colors of variables:    wff set class
This proof depends on syntax axioms:   = wceq 1402   class class class wbr 4130
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-v 2823  df-un 3224  df-sn 3715  df-pr 3716  df-op 3718  df-br 4131
This theorem is used by:  3brtr4i  4160  ensn1  7083  pw1dom2  7587  0lt1sr  8133  0le2  9397  2pos  9398  3pos  9401  4pos  9404  5pos  9407  6pos  9408  7pos  9409  8pos  9410  9pos  9411  1lt2  9479  2lt3  9480  3lt4  9482  4lt5  9485  5lt6  9489  6lt7  9494  7lt8  9500  8lt9  9507  nn0le2xi  9618  numltc  9812  declti  9824  sqge0i  11078  faclbnd2  11196  ege2le3  12457  cos2bnd  12546  3dvdsdec  12651  n2dvdsm1  12699  n2dvds3  12701  pockthi  13160  dec2dvds  13213  prmlem1  13245  prmlem2  13257  1259prm  13270  dveflem  15918  tangtx  16031  birthdaylog2  16189  ppiqub  16254  bposlem7  16278  lgsdir2lem2  16314  ex-fl  16905
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