**Description:** Equality deduction for operation value. (Contributed by NM, 13-Mar-1995)

Ref | Expression | ||
---|---|---|---|

Hypothesis | oveq1d.1 | $${\u22a2}{\phi}\to {A}={B}$$ | |

Assertion | oveq1d | $${\u22a2}{\phi}\to {A}{F}{C}={B}{F}{C}$$ |

Step | Hyp | Ref | Expression |
---|---|---|---|

1 | oveq1d.1 | $${\u22a2}{\phi}\to {A}={B}$$ | |

2 | oveq1 | $${\u22a2}{A}={B}\to {A}{F}{C}={B}{F}{C}$$ | |

3 | 1 2 | syl | $${\u22a2}{\phi}\to {A}{F}{C}={B}{F}{C}$$ |