\(\left(2,8x-32\right):\frac{2}{3}=-90\\ \frac{14}{5}x-32=\left(-90\right)\cdot\frac{2}{3}\\ \frac{14}{5}x-32=-60\\ \frac{14}{5}x=\left(-60\right)+32\\ \frac{14}{5}x=-28\\ x=\left(-28\right):\frac{14}{5}\\ x=\left(-28\right)\cdot\frac{5}{14}\\ x=-10\)Vậy x = -10
\(\left(2,8x-32\right):\frac{2}{3}=-90\)
\(2,8x-32=-90.\frac{2}{3}\)
\(2,8x-32=-60\)
\(2,8x=-60+32\)
\(2,8x=-28\)
\(x=-28:2,8=-10\)
Vậy \(x=-10\)
(2,8x−32):23=−90(2,8x−32):23=−90
2,8x−32=−90.232,8x−32=−90.23
2,8x−32=−602,8x−32=−60
2,8x=−60+322,8x=−60+32
2,8x=−282,8x=−28
x=−28:2,8=−10x=−28:2,8=−10
Vậy x=−10
2,8x-32=-9O-nhân 2/3
2,8x =-6O+32
x = -28:2,8
x = -1O
Vậy x= -1O.
(2,8x - 32) : \(\frac{2}{3}\) = - 90
(2,8x - 32) = (-90) . \(\frac{2}{3}\)
(2,8x - 32) = -60
2,8x = (-60) + 32
2,8x = -28
x = (-28) : 2,8
x = -10
