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

Toán Lớp 6: `(3x)/(2.5)+(3x)/(5.8)+(3x)/(8.11)+(3x)/(11.14)=1/2`

Home/ Toán Lớp 6: `(3x)/(2.5)+(3x)/(5.8)+(3x)/(8.11)+(3x)/(11.14)=1/2`

Toán Lớp 6: `(3x)/(2.5)+(3x)/(5.8)+(3x)/(8.11)+(3x)/(11.14)=1/2`

Tháng Hai 18, 2023 Toán học 2 Comments 0 views

Toán Lớp 6: (3x)/(2.5)+(3x)/(5.8)+(3x)/(8.11)+(3x)/(11.14)=1/2

Comments ( 2 )

  1. dantam45
    dantam45
    18 Tháng Hai, 2023 at 5:34 chiều
    Reply
    Giải đáp+Lời giải và giải thích chi tiết:
    (3x)/(2.5)+(3x)/(5.8)+(3x)/(8.11)+(3x)/(11.14)=1/2$\\$x.((3)/(2.5)+(3)/(5.8)+(3)/(8.11)+(3)/(11.14))=1/2$\\$x.(1/2-1/5+1/5-1/8+1/8-1/11+1/11-1/14)=1/2$\\$x.(1/2-1/14)=1/2$\\$x. 3/7=1/2$\\$x=1/2:3/7$\\$x=7/6

  2. maianhnhiquynh
    maianhnhiquynh
    18 Tháng Hai, 2023 at 5:33 chiều
    Reply
    (3x)/(2.5) + (3x)/(5.8) + (3x)/(8.11) + (3x)/(11.14) = 1/2
    => x . (3/(2.5) + 3/(5.8) + 3/(8.11) + 3/(11.14)) = 1/2
    => x . (1/2 – 1/5 + 1/5 + 1/8 – 1/18 + … + 1/11 – 1/14) = 1/2
    => x . (1/2 – 1/14) = 1/2
    => x . 3/7 = 1/2
    => x = 1/2 : 3/7
    => x = 1/2 . 7/3
    => x = 7/6
    Vậy x = 7/6

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

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