Register Now

Login

Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

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

Toán Lớp 6: a)-5/18+32/45-9/10 b)(-1/4+51/33-5/3)-(-15/12+6/11-42/49)

Home/ Toán Lớp 6: a)-5/18+32/45-9/10 b)(-1/4+51/33-5/3)-(-15/12+6/11-42/49)

Toán Lớp 6: a)-5/18+32/45-9/10 b)(-1/4+51/33-5/3)-(-15/12+6/11-42/49)

Tháng Một 17, 2023 Toán học 2 Comments 0 views

Toán Lớp 6: a)-5/18+32/45-9/10
b)(-1/4+51/33-5/3)-(-15/12+6/11-42/49)

Comments ( 2 )

  1. cobelolen
    cobelolen
    17 Tháng Một, 2023 at 4:41 chiều
    Reply
    a,   
    -5/18 + 32/45 – 9/10
    =13/30 -9/10
    =-7/15
    b,
    (-1/4 + 51/33 – 5/3) – (-15/12 + 6/11 – 42/49)
    =-1/4 + 51/33 – 5/3 + 15/12 – 6/11 + 42/49
    =(-1/4 + 15/12) + (51/33 -6/11) – (5/3 – 42/49)
    =(-1/4 + 5/4) + ( 17/11 -6/11) – (5/3 – 6/7)
    =1 + 1 – 17/21
    =21/21 + 21/21 – 17/21
    =25/21

  2. giangnguyen33
    giangnguyen33
    17 Tháng Một, 2023 at 4:41 chiều
    Reply
    a) -5/18 + 32/45 – 9/10
    =-25/90 + 64/90 – 81/90
    = \frac{-25 + 64 – 81}{90}
    = -42/90
    = -7/15
    b) ( -1/4 + 51/33 – 5/3) – ( -15/12 + 6/11 – 42/49)
    = -1/4 + 17/11 – 5/3 + 5/4 – 6/11 + 6/7
    =( -1/4 + 5/4) + ( 17/11 – 6/111)  – (5/3 – 6/7)
    = 1 + 1 -17/21
    = 2 – 17/21
    =25/21

Leave a reply

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

Trang Ðài

About Trang Ðài