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

Toán Lớp 6: Tìm x 19 . (2 + 3 + 4 – 5 + 6 – 7)^2 . (7x – 2) = 0

Home/ Toán Lớp 6: Tìm x 19 . (2 + 3 + 4 – 5 + 6 – 7)^2 . (7x – 2) = 0

Toán Lớp 6: Tìm x 19 . (2 + 3 + 4 – 5 + 6 – 7)^2 . (7x – 2) = 0

Tháng Năm 18, 2022 Toán học 2 Comments 0 views

Toán Lớp 6: Tìm x
19 . (2 + 3 + 4 – 5 + 6 – 7)^2 . (7x – 2) = 0

Comments ( 2 )

  1. minhhaanh
    minhhaanh
    18 Tháng Năm, 2022 at 11:58 sáng
    Reply
    19 . (2 + 3 + 4 – 5 + 6 – 7)^2 . (7x – 2) = 0
    19 . (5 + 4 – 5 + 6 – 7)^2 . (7x – 2) = 0
    19 . (9 – 5 + 6 – 7)^2 . (7x – 2) = 0
    19. (4 + 6 – 7)^2 . (7x – 2) = 0
    19 . (10 – 7)^2 . (7x – 2) = 0
    19 . 3^2 . (7x – 2) = 0
    19 . 9 . (7x – 2) = 0
    171 . (7x – 2) = 0
    7x – 2 = 171 . 0
    7x – 2 = 0
    7x = 2 + 0
    7x = 2
    x = 2 : 7
    x = 2/7

  2. haianhtu97
    haianhtu97
    18 Tháng Năm, 2022 at 11:58 sáng
    Reply
    19 . (2 + 3 + 4 – 5 + 6 – 7)^2 . (7x – 2) = 0
    19 . 3^2 . (7x – 2) = 0
    19 . 9 . (7x – 2) = 0
    171 . (7x – 2) = 0
    7x – 2 = 0 : 171
    7x – 2 = 0
    7x = 0 + 2
    7x = 2
      x = 2 : 7
      x = 2/7
    Vậy x = 2/7
    #dtkc
     

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

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