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

Toán Lớp 6: 1 thuc hien phep tinh a) 1/2+(-3/4)+(-5/6) b) 7/15-(-8/5)+(-1/3) c) 8/9+(-5/6)+7/2

Tháng Một 9, 2023 Toán học 2 Comments 0 views

Toán Lớp 6: 1 thuc hien phep tinh a) 1/2+(-3/4)+(-5/6) b) 7/15-(-8/5)+(-1/3) c) 8/9+(-5/6)+7/2

Comments ( 2 )

  1. ngoclanquynh
    ngoclanquynh
    9 Tháng Một, 2023 at 4:16 chiều
    Reply
    a ) 1/2 + ( – 3 )/4 + ( – 5 )/6
    = 6/12 + ( – 9 )/12 + ( – 10 )/12
    = ( – 3 )/12 + ( – 10 )/12
    = ( – 13 )/12
    b ) 7/15 – ( – 8 )/5 + ( – 1 )/3
    = 7/15 – ( – 24 )/15 + ( – 5 )/15
    = 31/15 + ( – 5 )/15
    = 26/15
    c ) 8/9 + ( – 5 )/6 + 7/2
    = 16/18 + ( – 15 )/18 + 63/18
    = 1/18 + 63/18
    = 32/9
     

  2. haiyemy
    haiyemy
    9 Tháng Một, 2023 at 4:15 chiều
    Reply
    a) 1/2+(-3/4)+(-5/6)
    = 6/12+(-9/12)+(-10/12)
    = -13/12
    b) 7/15-(-8/5)+(-1/3)
    = 7/15-(-24/15)+(-5/15)
    = 7/15+24/15+(-5/15)
    = 26/15
    c) 8/9+(-5/6)+7/2
    = 32/36+(-30/36)+126/36
    = 32/9

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

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