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

Toán Lớp 7: 5/4-1/4(x+2)=2 im want help… -from VN

Toán Lớp 7: 5/4-1/4(x+2)=2
im want help…
-from VN

Comments ( 2 )

  1. 5/4 – 1/4 ( x + 2 ) = 2
    => 1/4 ( x + 2 ) = 5/4 – 2
    => 1/4 ( x + 2 ) = {-3}/4
    => x + 2 = {-3}/4 : 1/4
    => x + 2 = -3
    => x = -3 – 2
    => x = -5
     $\text{ Vậy x = -5 }$
     

  2. Giải đáp:
     x = -5
    Lời giải và giải thích chi tiết:
    5/4 – 1/4 (x + 2) = 2
    1/4 (x + 2) = 5/4 – 2
    1/4 (x + 2) = -3/4
    x + 2 = -3/4 : 1/4
    x + 2 = -3/4 . 4
    x + 2 = -3
    x = -3 – 2
    x = -5
    Vậy x = -5

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

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