a)$\frac{4}{5}$x=$\frac{2^{3}}{/-7/.5}$ b)$\frac{-1}{2}$x+$\frac{2}{3}$.($\frac{-5}{4}$)=$\frac{3}{5}$x-$\frac{5}{6}$ 11/08/2021 Bởi Everleigh a)$\frac{4}{5}$x=$\frac{2^{3}}{/-7/.5}$ b)$\frac{-1}{2}$x+$\frac{2}{3}$.($\frac{-5}{4}$)=$\frac{3}{5}$x-$\frac{5}{6}$
Đáp án: $a/$ `4/5x = (-2)^3/(|-7| . 5)` `-> 4/5x = (-8)/(7 .5)` `-> 4/5x = (-8)/35` `-> x = (-8)/35 : 4/5` `-> x =(-2)/7` `text{Vậy}` `x = (-2)/7` $b/$ `(-1)/2x + 2/3. (-5)/4 = 3/5x – 5/6` `-> (-1)/2x – 5/6 = 3/5x – 5/6` `-> (-1)/2x – 5/6 – 3/5x + 5/6 = 0` `-> [(-1)/2x – 3/5x] + (-5/6 + 5/6) = 0` `-> [(-1/2 – 3/5)x] + 0 = 0` `-> (-11)/10x = 0` `-> x = 0` `text{Vậy x=0}` Bình luận
Đáp án:
$a/$ `4/5x = (-2)^3/(|-7| . 5)`
`-> 4/5x = (-8)/(7 .5)`
`-> 4/5x = (-8)/35`
`-> x = (-8)/35 : 4/5`
`-> x =(-2)/7`
`text{Vậy}` `x = (-2)/7`
$b/$ `(-1)/2x + 2/3. (-5)/4 = 3/5x – 5/6`
`-> (-1)/2x – 5/6 = 3/5x – 5/6`
`-> (-1)/2x – 5/6 – 3/5x + 5/6 = 0`
`-> [(-1)/2x – 3/5x] + (-5/6 + 5/6) = 0`
`-> [(-1/2 – 3/5)x] + 0 = 0`
`-> (-11)/10x = 0`
`-> x = 0`
`text{Vậy x=0}`
cho mik xctlhn nhé bạn chủ tus cute!