x+ $\frac{5}{2}$x – $\frac{3}{2}$ = $\frac{9}{4}$

0 bình luận về “x+ $\frac{5}{2}$x – $\frac{3}{2}$ = $\frac{9}{4}$”

1. `x + 5/2x – 3/2 = 9/4`

   `x + 5/2x = 9/4 + 3/2`

   `x + 5/2x = 15/4`

   `1x + 5/2x = 15/4`

   `x.(1 + 5/2) = 15/4`

   `x.(7)/2 = 15/4`

   `x = 15/4 : 7/2`

   `x = 15/14`

   Vậy `x = 15/14`

   `#Study well`

    

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2. Đáp án+giải thích các bước giải:

   $x$+ $\dfrac{5}{2}$$x$ -$\dfrac{3}{2}$ = $\dfrac{9}{4}$

   $x$+ $\dfrac{5}{2}$$x$ = $\dfrac{9}{4}$ + $\dfrac{3}{2}$

   $x$+ $\dfrac{5}{2}$$x$ = $\dfrac{15}{4}$

   $x$($\dfrac{5}{2}$ +$1$) = $\dfrac{15}{4}$

   $x$$\dfrac{7}{2}$ = $\dfrac{15}{4}$

   $x$ = $\dfrac{15}{4}$ : $\dfrac{7}{2}$

   $x$ = $\dfrac{15}{14}$

   Vậy $x$ = $\dfrac{15}{4}$

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