Malamulo okulitsa mabulaketi okhala ndi zitsanzo

M'buku lino, tiwona malamulo oyambira otsegulira mabulaketi, kutsagana nawo ndi zitsanzo kuti timvetsetse bwino nkhani zaukadaulo.

Kukula kwa bracket - m'malo mwa mawu okhala ndi mabulaketi okhala ndi mawu ofanana nawo, koma opanda mabulaketi.

Timasangalala

Malamulo okulitsa mabatani

Chigamulo 1

Ngati pali "kuphatikiza" patsogolo pa mabatani, ndiye kuti zizindikiro za manambala onse mkati mwa mabakiteriya sizisintha.

a + (b – c – d + e) = a + b – c – d + e

Kufotokozera: Iwo. Kuphatikizira nthawi kuphatikizira kumapangitsa kuphatikizira, ndipo kuphatikizira kuphatikizira kumapangitsa kuchotsera.

zitsanzo:

  • 6 + ( 21 – 18 – 37 ) = 6 + 21 – 18 – 37
  • 20 + (-8 + 42 – 86 – 97) = 20 - 8 + 42 - 86 - 97

Chigamulo 2

Ngati pali minus kutsogolo kwa mabulaketi, ndiye kuti zizindikiro za manambala onse mkati mwa mabulaketi zimasinthidwa.

a – (b – c – d + e) = a – b + c + d – e

Kufotokozera: Iwo. Kuchotsera kuphatikizira ndi kuchotsera, ndipo kuchotsera kuphatikizira ndi kuphatikizira.

zitsanzo:

  • 65 - (-20 + 16 - 3) = 65 + 20 – 16 + 3
  • 116 – (49 + 37 – 18 – 21) = 116 - 49 - 37 + 18 + 21

Chigamulo 3

Ngati pali chizindikiro cha "kuchulukitsa" m'mabulaketi kapena pambuyo pake, zonse zimatengera zomwe zimachitika mkati mwawo:

Kuwonjezera ndi/kapena kuchotsa

  • a ⋅ (b – c + d) = a ⋅ b – a ⋅ c + a ⋅ d
  • (b + c – d) ⋅ a = a ⋅ b + a ⋅ c – a ⋅ d

Kuwonjezeka

  • a ⋅ (b ⋅ c ⋅ d) = a ⋅ b ⋅ c ⋅ d
  • (b ⋅ c ⋅ d) ⋅ a = b ⋅ с ⋅ d ⋅ a

Division

  • a ⋅ (b :c) = (a ⋅ b): p = (a: c) ⋅ b
  • (a: b) ⋅ c = (a ⋅ c): b = (c: b) ⋅ a

zitsanzo:

  • 18 ⋅ (11 + 5 - 3) = 18 ⋅ 11 + 18 ⋅ 5 - 18 ⋅ 3
  • 4 ⋅ (9 ⋅ 13 ⋅ 27) = 4 ⋅ 9 ⋅ 13 ⋅ 27
  • 100 ⋅ (36 : 12) = (100 ⋅ 36) : 12

Chigamulo 4

Ngati pali magawano chizindikiro pamaso kapena pambuyo m`mabulaketi, ndiye, monga mu lamulo pamwamba, zonse zimadalira zimene amachita mkati mwawo:

Kuwonjezera ndi/kapena kuchotsa

Choyamba, zomwe zimachitika m'mabungwe zimachitidwa, mwachitsanzo, zotsatira za kuchuluka kapena kusiyana kwa manambala kumapezeka, ndiye kugawanika kumachitika.

ndi: (b-c + d)

b – c + d = e

ndi: e = f

(b + c – d): a

b + с – d = e

ndi: = f

Kuwonjezeka

  • ndi: (b ⋅ c) = ndi: b:c = ndi: c:b
  • (b⋅ c): a = (b : a) ⋅ tsa = (ndi : a) ⋅ b

Division

  • ndi: (b:c) = (a: b) ⋅ tsa = (c: b) ⋅ a
  • (b: c): ndi = b:c ndi = b: (a ⋅ c)

zitsanzo:

  • 72 : ( 9 - 8 ) = 72:1
  • 160: (40 ⋅ 4) = 160: 40:4
  • 600 : ( 300 : 2 ) = (600 : 300) ⋅ 2

Siyani Mumakonda