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| Mirrors > Home > ILE Home > Th. List > addcan2ad | GIF version | ||
| Description: Cancelling a term on the right-hand side of a sum in an equality. Consequence of addcan2d 8364. (Contributed by David Moews, 28-Feb-2017.) |
| Ref | Expression |
|---|---|
| addcand.1 | ⊢ (𝜑 → 𝐴 ∈ ℂ) |
| addcand.2 | ⊢ (𝜑 → 𝐵 ∈ ℂ) |
| addcand.3 | ⊢ (𝜑 → 𝐶 ∈ ℂ) |
| addcan2ad.4 | ⊢ (𝜑 → (𝐴 + 𝐶) = (𝐵 + 𝐶)) |
| Ref | Expression |
|---|---|
| addcan2ad | ⊢ (𝜑 → 𝐴 = 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | addcan2ad.4 | . 2 ⊢ (𝜑 → (𝐴 + 𝐶) = (𝐵 + 𝐶)) | |
| 2 | addcand.1 | . . 3 ⊢ (𝜑 → 𝐴 ∈ ℂ) | |
| 3 | addcand.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ ℂ) | |
| 4 | addcand.3 | . . 3 ⊢ (𝜑 → 𝐶 ∈ ℂ) | |
| 5 | 2, 3, 4 | addcan2d 8364 | . 2 ⊢ (𝜑 → ((𝐴 + 𝐶) = (𝐵 + 𝐶) ↔ 𝐴 = 𝐵)) |
| 6 | 1, 5 | mpbid 147 | 1 ⊢ (𝜑 → 𝐴 = 𝐵) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 = wceq 1397 ∈ wcel 2202 (class class class)co 6018 ℂcc 8030 + caddc 8035 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 ax-resscn 8124 ax-1cn 8125 ax-icn 8127 ax-addcl 8128 ax-addrcl 8129 ax-mulcl 8130 ax-addcom 8132 ax-addass 8134 ax-distr 8136 ax-i2m1 8137 ax-0id 8140 ax-rnegex 8141 ax-cnre 8143 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-rex 2516 df-v 2804 df-un 3204 df-in 3206 df-ss 3213 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-br 4089 df-iota 5286 df-fv 5334 df-ov 6021 |
| This theorem is referenced by: (None) |
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