TÌM X A)3/2X-7/3=-1/4 B)3/4+2/5X=29/60 C)3/5-1/2X=7/10 D)(X-3/4^2)=1/16

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1. `=>`

   `a. 3/2x- 7/3=\frac{-1}{4}`

   `3/2x=\frac{-1}{4}+ 7/3`

   `3/2x=25/12`

   `x=25/12: 3/2`

   `x=25/12. 2/3`

   `x=25/18`

   Vậy `x=25/18.`

   `b. 3/4+ 2/5x=29/60`

   `2/5x=29/60- 3/4`

   `2/5x=\frac{-4}{15}`

   `x=\frac{-4}{15}: 2/5`

   `x=\frac{-4}{15}. 5/2`

   `x=\frac{-2}{3}`

   Vậy `x=\frac{-2}{3}.`

   `c. 3/5- 1/2x=7/10`

   `1/2x=3/5- 7/10`

   `1/2x=\frac{-1}{10}`

   `x=\frac{-1}{10}: 1/2`

   `x=\frac{-1}{10}. 2`

   `x=\frac{-1}{5}`

   Vậy `x=\frac{-1}{5}.`

   `d. (x- 3/4^2)=1/16`

   `x- 3/16=1/16`

   `x=1/16+ 3/16`

   `x=1/4`

   Vậy `x=1/4.`

    

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2. `a)` `3/2 x – 7/3 = (-1)/4`

   `3/2 x = (-1)/4 + 7/3 = 25/12`

   `x=25/12 : 3/2`

   Vậy `x=25/18`

   `b)` `3/4 + 2/5 x = 29/60`

   `2/5 x = 29/60 – 3/4 = (-4)/15`

   `x=(-4)/15 : 2/5`

   Vậy `x=(-2)/3`

   `c)` `3/5 – 1/2 x = 7/10`

   `1/2 x = 3/5 – 7/10 = (-1)/10`

   `x=(-1)/10 : 1/2`

   Vậy `x=(-1)/5`

   `d)` `x – 3/(4^2) = 1/16`

   `x- 3/16 = 1/16`

   `x=1/16 + 3/16`

   Vậy `x=1/4`

    

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