$\frac{-7}{8}$ : $\frac{2}{7}$ – (8 – $\frac{1}{3}$x) = $\frac{5}{4}$
(hỏi vui ^.^)
$\frac{-7}{8}$ : $\frac{2}{7}$ – (8 – $\frac{1}{3}$x) = $\frac{5}{4}$ (hỏi vui ^.^)
By Sarah
By Sarah
$\frac{-7}{8}$ : $\frac{2}{7}$ – (8 – $\frac{1}{3}$x) = $\frac{5}{4}$
(hỏi vui ^.^)
-7/8 : 2/7 – (8-1/3.X) = 5/4
⇔ -49/16 – (8-1/3.X) = 5/4
⇔ – (8-1/3.X) = 5/4 + 49/16
⇔ -8+1/3.X = 69/16
⇔ 1/3.X = 69/16+8
⇔ 1/3.X = 197/16
⇔ X = 197/16 : 1/3
⇔ X = 591/16
$-\dfrac{7}{8}:\dfrac{2}{7}-\Bigg(8-\dfrac{1}{3}x\Bigg)=\dfrac{5}{4}$
$⇔ -\dfrac{7}{8}.\dfrac{7}{2}-\dfrac{5}{4}=8-\dfrac{x}{3}$
$⇔ -\dfrac{69}{16}=8-\dfrac{x}{3}$
$⇔ \dfrac{x}{3}=8+\dfrac{69}{16}$
$⇔ \dfrac{x}{3}=\dfrac{197}{16}$
$⇔ x=3.\dfrac{197}{16}$
$⇔ x=\dfrac{591}{16}$