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

Toán Lớp 7: F=(53/4)-2.5/27-65/6).(230+1/25)+46.3/4 PHAN (24/7+3.1/3):(12.1/3-14.2/7) G=(-5/7-7/9+9/11-11/13).(3-3/4) PHAN (10/21+14/27-6/11+22/39)

Tháng Mười Hai 30, 2022 Toán học 1 Comment 0 views

Toán Lớp 7: F=(53/4)-2.5/27-65/6).(230+1/25)+46.3/4 PHAN (24/7+3.1/3):(12.1/3-14.2/7)
G=(-5/7-7/9+9/11-11/13).(3-3/4) PHAN (10/21+14/27-6/11+22/39):(2-2/3)

Comments ( 1 )

  1. hienchaudiem
    hienchaudiem
    30 Tháng Mười Hai, 2022 at 4:40 chiều
    Reply
    Giải đáp:
    F =((53/4-2 5/27-65/6).(230 1/25+46 3/4))/((24/7+3 1/3):(12.1/3-14 2/7))
    = ((53/4 – 59/27 – 65/6. 5076/25 + 187/4))/((10/7 + 10/3):(37/3 – 100/7))
    = (25/108 . 5076/25 + 187/4)/(100/21 : -41/21)
    = (5076/108 + 187/4)/(-100/4) 
    = (47+187/4)/(-25)
    = 375/4 : (-25)
    = -15/4
    G = ((-5/7-7/9+9/11-11/13).(3-3/4))/((10/21+14/27-6/11+22/39):(2-2/3))
    = (-176/273 . 9/4)/(-3104/27027 : 4/3)
    = (-132/91)/(2328/-27017)
    ~~  16,834

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

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