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Mirrors > Home > ILE Home > Th. List > negsubdii | GIF version |
Description: Distribution of negative over subtraction. (Contributed by NM, 6-Aug-1999.) |
Ref | Expression |
---|---|
negidi.1 | ⊢ 𝐴 ∈ ℂ |
pncan3i.2 | ⊢ 𝐵 ∈ ℂ |
Ref | Expression |
---|---|
negsubdii | ⊢ -(𝐴 − 𝐵) = (-𝐴 + 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | negidi.1 | . . 3 ⊢ 𝐴 ∈ ℂ | |
2 | pncan3i.2 | . . . 4 ⊢ 𝐵 ∈ ℂ | |
3 | 2 | negcli 7376 | . . 3 ⊢ -𝐵 ∈ ℂ |
4 | 1, 3 | negdii 7392 | . 2 ⊢ -(𝐴 + -𝐵) = (-𝐴 + --𝐵) |
5 | 1, 2 | negsubi 7386 | . . 3 ⊢ (𝐴 + -𝐵) = (𝐴 − 𝐵) |
6 | 5 | negeqi 7302 | . 2 ⊢ -(𝐴 + -𝐵) = -(𝐴 − 𝐵) |
7 | 2 | negnegi 7378 | . . 3 ⊢ --𝐵 = 𝐵 |
8 | 7 | oveq2i 5543 | . 2 ⊢ (-𝐴 + --𝐵) = (-𝐴 + 𝐵) |
9 | 4, 6, 8 | 3eqtr3i 2109 | 1 ⊢ -(𝐴 − 𝐵) = (-𝐴 + 𝐵) |
Colors of variables: wff set class |
Syntax hints: = wceq 1284 ∈ wcel 1433 (class class class)co 5532 ℂcc 6979 + caddc 6984 − cmin 7279 -cneg 7280 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in1 576 ax-in2 577 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-14 1445 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-sep 3896 ax-pow 3948 ax-pr 3964 ax-setind 4280 ax-resscn 7068 ax-1cn 7069 ax-icn 7071 ax-addcl 7072 ax-addrcl 7073 ax-mulcl 7074 ax-addcom 7076 ax-addass 7078 ax-distr 7080 ax-i2m1 7081 ax-0id 7084 ax-rnegex 7085 ax-cnre 7087 |
This theorem depends on definitions: df-bi 115 df-3an 921 df-tru 1287 df-fal 1290 df-nf 1390 df-sb 1686 df-eu 1944 df-mo 1945 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ne 2246 df-ral 2353 df-rex 2354 df-reu 2355 df-rab 2357 df-v 2603 df-sbc 2816 df-dif 2975 df-un 2977 df-in 2979 df-ss 2986 df-pw 3384 df-sn 3404 df-pr 3405 df-op 3407 df-uni 3602 df-br 3786 df-opab 3840 df-id 4048 df-xp 4369 df-rel 4370 df-cnv 4371 df-co 4372 df-dm 4373 df-iota 4887 df-fun 4924 df-fv 4930 df-riota 5488 df-ov 5535 df-oprab 5536 df-mpt2 5537 df-sub 7281 df-neg 7282 |
This theorem is referenced by: negsubdi2i 7394 resqrexlemover 9896 |
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