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

Toán Lớp 6: Giai `(3` `1/4 :x).(-1` `1/4)=-5/3 – 5/6`

Toán Lớp 6: Giai
(3 1/4 :x).(-1 1/4)=-5/3 – 5/6

Comments ( 2 )

  1. ( 3 1/4 : x) . ( -1 1/4) = -5/3 – 5/6
    (13/4 : x) . (-5/4) = -10/6 – 5/6
    13/4 : x . (-5/4) = -5/2
    13/4:x = -5/2 : (-5/4)
    13/4 😡 =-5/2 . (-4/5)
    13/4 : x= 2
    x= 13/4 : 2
    x= 13/4 . 1/2
    x=13/8
    Vậy x= 13/8
     

  2. (3$\frac{1}{4}$ ÷ x) × ( -1$\frac{1}{4}$) = -$\frac{5}{3}$ – $\frac{5}{6}$
    ⇒ ($\frac{13}{4}$ ÷ x) × ($\frac{-5}{4}$) = -$\frac{5}{2}$
    ⇒ $\frac{13}{4}$ ÷ x × (-$\frac{5}{4}$) = -$\frac{5}{2}$
    ⇒$\frac{13}{4}$ ÷ x = -$\frac{5}{2}$ ÷ (-$\frac{5}{4}$) 
    ⇒$\frac{13}{4}$ ÷ x = 2
    ⇒ x=$\frac{13}{4}$ ÷ 2
    ⇒ x= $\frac{13}{8}$
       Vậy x= $\frac{13}{8}$
    Mình cầu xin bạn cho mình xin câu trả lời hay nhất ạ ! 
     

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