( 2,8x - 32 ) : 2/3 = -90
2,8x - 32 = -90.2/3
2,8x - 32 = -60
2.8x = -60+32
2.8x = -28
x = -10
a) (2,8 . x -32) : 2/3 = -90
=>(2,8x-32):2/3=-90
=>21/5x-48=-90
=>21/5x=-42
=>x=-10
vậy x=-10
(2,8 x -32):2/3=-90
( 4,5-2x)nhan1/4/7=11
tìm x
(2,8.x-32):2/3=-90
4-|x-2012|=(-2)mũ2 (x thuộc z)
Tìm x
(5+4/7):x=13
(2,8.x+32):2/3=90
Tìm x
( 2,8.x - 32 ) :\(\frac{2}{3}\)= - 90
( 2,8.x-32):\(\frac{2}{3}\)= 90
TÌM X ,BIẾT :
( 2,8 x X - 32 ) : 2/3 = 90.
NHỜ CÁC BẠN GIÚP MÌNH VỚI NHÉ!
Tính
a) \(\frac{-1}{7}.\left(9\frac{1}{2}-8,75\right):\frac{2}{7}+0,625:1\frac{2}{3}\)
b)x-25%.x-1=-|-5|
c)\(2\frac{3}{4}.\left(0,4\right)1\frac{3}{5}.2,75+\left(-1,2\right):\frac{4}{11}\)
d) (2,8 x -32 ):\(\frac{2}{3}=-90\)
Tìm x
a) ( 2,8x - 32 ) : 2/3 = -90
b) 7,5 x 1/3/4x = 6/2/5
c) ( 4,5 - 2x ) : 3/4 = 1/1/3
d) -5/6 + 8/3 + (-29)/6 ≤ x ≤ -1/2 + 2 + 5/2
e) ( 2,7x - 1/1/2x ) : 2/7 = -21/4
Tìm a, b biết :
a/27 = -5/9 = -45/b
Tìm X <- N, biết
a) 32 - 4 . ( 90 : x - 8 ) = 24
b) 3 . ( x + 5 ) + 2 . ( x + 10 ) = 100
