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| Mirrors > Home > MPE Home > Th. List > pncan3s | Structured version Visualization version GIF version | ||
| Description: Subtraction and addition of equals. (Contributed by Scott Fenton, 4-Feb-2025.) |
| Ref | Expression |
|---|---|
| pncan3s | ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐴 +s (𝐵 -s 𝐴)) = 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2762 | . 2 ⊢ (𝐵 -s 𝐴) = (𝐵 -s 𝐴) | |
| 2 | simpr 490 | . . 3 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → 𝐵 ∈ No ) | |
| 3 | simpl 488 | . . 3 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → 𝐴 ∈ No ) | |
| 4 | 2, 3 | subscld 28326 | . . 3 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐵 -s 𝐴) ∈ No ) |
| 5 | 2, 3, 4 | subaddsd 28334 | . 2 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → ((𝐵 -s 𝐴) = (𝐵 -s 𝐴) ↔ (𝐴 +s (𝐵 -s 𝐴)) = 𝐵)) |
| 6 | 1, 5 | mpbii 236 | 1 ⊢ ((𝐴 ∈ No ∧ 𝐵 ∈ No ) → (𝐴 +s (𝐵 -s 𝐴)) = 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2145 (class class class)co 7416 No csur 27874 +s cadds 28222 -s csubs 28283 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2734 ax-rep 5236 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7739 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-tp 4592 df-op 4594 df-ot 4596 df-uni 4871 df-int 4911 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5554 df-eprel 5559 df-po 5567 df-so 5568 df-fr 5612 df-se 5613 df-we 5614 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-pred 6303 df-ord 6364 df-on 6365 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7373 df-ov 7419 df-oprab 7420 df-mpo 7421 df-1st 7989 df-2nd 7990 df-frecs 8283 df-wrecs 8314 df-recs 8363 df-1o 8458 df-2o 8459 df-nadd 8657 df-no 27877 df-lts 27878 df-bday 27879 df-les 27979 df-slts 28021 df-cuts 28023 df-0s 28070 df-made 28090 df-old 28091 df-left 28093 df-right 28094 df-norec 28201 df-norec2 28212 df-adds 28223 df-negs 28284 df-subs 28285 |
| This theorem is used by: npcans 28338 nncansd 28360 subsdid 28421 mulsunif2lem 28432 n0ltsp1le 28628 elreno2 28758 |
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