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

Toán Lớp 6: -4/3 (x – 1/4) = 3/2 (2x – 1) Ai làm đúng nhất mình sẽ cho ctlhn

Toán Lớp 6: -4/3 (x – 1/4) = 3/2 (2x – 1)
Ai làm đúng nhất mình sẽ cho ctlhn

Comments ( 2 )

  1. Giải đáp + Lời giải và giải thích chi tiết:
    -4/3(x-1/4)=3/2(2x-1)
    =>-4/3x+(-4/3).(-1/4)=3/2 .2x+3/2.(-1)
    =>-4/3x+1/3=3x-3/2
    =>-4/3x+1/3-3x+3/2=0
    =>(-4/3x-3x)+(1/3+3/2)=0
    =>x(-4/3-3)+(2/6+9/6)=0
    =>x(-4/3-9/3)+11/6=0
    =>-13/3x=0-11/6
    =>-13/3x=-11/6
    =>x=(-11/6):(-13/3)
    =>x=(-11/6).(-3/13)
    =>x=11/26
     

  2. -4/3 (x-1/4)=3/2 (2x-1)
    => -4/3x + 4/12=3x-3/2
    =>-4/3x-3x=-4/12-3/2
    =>-13/3x=-11/6
    =>x=-11/6 : -13/3
    =>x=-11/6 . (-3/13)
    =>x=11/26
    Vậy x=11/26

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

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