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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: 19) -37-14-26+37 20) -15-23-85-77 21) -24+4-6+26 22) -6+5-4+25 Giúp mik với ạk

Toán Lớp 6: 19) -37-14-26+37
20) -15-23-85-77
21) -24+4-6+26
22) -6+5-4+25
Giúp mik với ạk

Comments ( 2 )

  1. 19) – 37 – 14 – 16 + 37
    = ( – 37 + 37 ) + ( – 14 – 26 )
    = 0 + ( – 40 )
    = – 40
    20) – 15 – 23 – 85 – 77
    = ( – 15 – 85 ) + ( – 23 – 77 )
    = – 100 + ( – 100 )
    = – 200
    21) – 24 + 4 – 6 + 26
    = ( – 24 + 4 ) + ( – 6 + 26 )
    = – 20 + 20
    = 0
    22) – 6 + 5 – 4 + 25
    = ( – 6 – 4 ) + ( 5 + 25 )
    = – 10 + 30
    = 20

  2. 19) -37-14-26+37
    =(-37+37)+(-14-26)
    =0+(-40)=-40
    20) -15-23-85-77
    =(-15-85)+(-23-77)
    =-100+(-100)=-200
    21) -24+4-6+26
    =(-24-6)+(4+26)
    =-30+30=0
    22) -6+5-4+25
    =(-6-4)+(5+25)
    =-10+30
    =20
     

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222-9+11+12:2*14+14 = ? ( )

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