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

Toán Lớp 6: x+3/22=27/121×11/9 8/23×46/24-x=1/3 1-x=49/65×5/7

Tháng Bảy 4, 2022 Toán học 2 Comments 0 views

Toán Lớp 6: x+3/22=27/121×11/9
8/23×46/24-x=1/3
1-x=49/65×5/7

Comments ( 2 )

  1. huenthanh97
    huenthanh97
    4 Tháng Bảy, 2022 at 10:56 chiều
    Reply
    x+$\frac{3}{22}$ = $\frac{27}{121}$ x $\frac{11}{9}$ 
    ⇔ x+ $\frac{3}{22}$ = $\frac{3}{11}$ x $\frac{3}{1}$
    ⇔ x +$\frac{3}{22}$ = $\frac{3}{11}$
    ⇔ x = $\frac{3}{11}$ – $\frac{3}{22}$ 
    ⇔ x = $\frac{6}{22}$ – $\frac{3}{22}$
    ⇒ x = $\frac{3}{22}$
    vậy x = $\frac{3}{22}$
    $\frac{8}{23}$  x $\frac{46}{24}$  -x = $\frac{1}{3}$ 
    ⇔ $\frac{46}{24}$  -x = $\frac{1}{3}$  : $\frac{8}{23}$
    ⇔ $\frac{46}{24}$  -x=  $\frac{23}{24}$
    ⇔x = $\frac{23}{24}$ + $\frac{46}{24}$ 
    ⇒ x = $\frac{23}{8}$
    vậy x = $\frac{23}{8}$
    1 -x = $\frac{49}{65}$ x $\frac{5}{7}$ 
    ⇔1-x = $\frac{7}{13}$ 
    ⇔x= $1$ – $\frac{7}{13}$ 
    ⇒x =  $\frac{6}{13}$ 
    Vậy x  =  $\frac{6}{13}$ 
     

  2. dongoclandiem
    dongoclandiem
    4 Tháng Bảy, 2022 at 10:56 chiều
    Reply
    x+$\frac{3}{22}$ = $\frac{27}{121}$ x $\frac{11}{9}$ 
    ⇔ x+ $\frac{3}{22}$ = $\frac{3}{11}$ x $\frac{3}{1}$
    ⇔ x +$\frac{3}{22}$ = $\frac{3}{11}$
    ⇔ $x$ = $\frac{3}{11}$ – $\frac{3}{22}$ 
    ⇔ $x$ = $\frac{6}{22}$ – $\frac{3}{22}$
    ⇒ $x$ = $\frac{3}{22}$
    vậy $x$ = $\frac{3}{22}$
    $\frac{8}{23}$  x $\frac{46}{24}$  -$x$ = $\frac{1}{3}$ 
    ⇔ $\frac{46}{24}$  -$x$ = $\frac{1}{3}$  : $\frac{8}{23}$
    ⇔ $\frac{46}{24}$  -$x$ =  $\frac{23}{24}$
    ⇔$x$ = $\frac{23}{24}$ + $\frac{46}{24}$ 
    ⇒ $x$ = $\frac{23}{8}$
    vậy $x$ = $\frac{23}{8}$
    $1$ -$x$ = $\frac{49}{65}$ x $\frac{5}{7}$ 
    ⇔$1$ -$x$  = $\frac{7}{13}$ 
    ⇔$x$ = $1$ – $\frac{7}{13}$ 
    ⇒$x$  =  $\frac{6}{13}$ 
    Vậy $x$  =  $\frac{6}{13}$ 
     

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

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