Khatisong ena, re tla hlahloba melao ea motheo ea ho bula li-brackets, re tsamaisane le mehlala bakeng sa kutloisiso e molemo ea boitsebiso ba theory.
Katoloso ea borakete – ho nkela sebaka sa polelo e nang le masakana ka polelo e lekanang le eona, empa ntle le masakaneng.
Melao ea ho atolosa bracket
busa 1
Haeba ho na le "plus" pele ho li-brackets, joale matšoao a linomoro tsohle ka har'a li-brackets a lula a sa fetohe.
tlhaloso: Tseo. Ho eketsa linako, kopanyelletsa ho etsa kopanyo, 'me ho eketsa makhetlo a minus e etsa tloso.
mehlala:
6 + (21 – 18 – 37) =6 + 21 – 18 – 37 20 + (-8 + 42 – 86 – 97) =20 - 8 + 42 - 86 - 97
busa 2
Haeba ho na le ho tlosa ka pel'a li-brackets, joale matšoao a linomoro tsohle ka har'a li-brackets a khutlisetsoa morao.
tlhaloso: Tseo. Tlosa makhetlo a kopantswe ke tloso, mme ho tloswa ha makhetlo a ho tlosa ke kopanyo.
mehlala:
65 - (-20 + 16 - 3) =65 + 20 – 16 + 3 116 – (49 + 37 – 18 – 21) =116 - 49 - 37 + 18 + 21
busa 3
Haeba ho na le lets'oao la "ngatafatso" pele kapa kamora masakaneng, tsohle li ipapisitse le hore na ke liketso life tse etsoang ka hare ho tsona:
Keketso le/kapa ho tlosa
a ⋅ (b – c + d) =a ⋅ b – a ⋅ c + a ⋅ d (b + c – d) ⋅ a =a ⋅ b + a ⋅ c – a ⋅ d
le katiso
a ⋅ (b ⋅ c ⋅ d) =a ⋅ b ⋅ c ⋅ d (b ⋅ c ⋅ d) ⋅ a =b ⋅ с ⋅ d ⋅ a
Sehlopha
a ⋅ (b : c) =(a ⋅ b) : leq =(a : c) ⋅ b (a : b) ⋅ c =(a ⋅ c) : b =(c : b) ⋅ a
mehlala:
18 ⋅ (11 + 5 - 3) =18 ⋅ 11 + 18 ⋅ 5 - 18 ⋅ 3 4 ⋅ (9 ⋅ 13 ⋅ 27) =4 ⋅ 9 ⋅ 13 ⋅ 27 100 ⋅ (36 : 12) =(100 ⋅ 36) : 12
busa 4
Haeba ho na le letšoao la karohano pele kapa ka mor'a masakaneng, joale, joalo ka molao o ka holimo, tsohle li itšetlehile ka hore na ke liketso life tse etsoang ka hare ho tsona:
Keketso le/kapa ho tlosa
Ntlha ea pele, ketso ka masakaneng e etsoa, ke hore, phello ea kakaretso kapa phapang ea linomoro e fumanoa, joale karohano e etsoa.
a: (b – c + d)
b – с + d = e
a: e = f
(b + c – d) : a
b + с – d = e
e: a = f
le katiso
a: (b ⋅ c) =ke: b:c =ke: c:b (b ⋅ c) : a =(b : a) ⋅ leq =(le : a) ⋅ b
Sehlopha
a: (b:c) =(a : b) ⋅ leq =(c : b) ⋅ a (b:c): a =b:c:a =b: (a ⋅ c)
mehlala:
72 : (9 - 8) =72:1 160 : (40 ⋅ 4) =160:40:4 600 : (300 :2) =(600 : 300) ⋅ 2