xx là 2 số hả bn.góp ý:muốn ghi dấu nhân bạn ấn shift+8 nha.
\(\left(x-7\right)\left(2x-8\right)=0\)
\(\orbr{\begin{cases}x-7=0\\2x-8=0\end{cases}}\)
\(\orbr{\begin{cases}x=7\\x=4\end{cases}}\)
Tìm X:
a,2xX-5=21
b,3/4+1/4xX=5/6
c,7/8-1/2xX=5/6
d(1/1x2+1/2x3+1/3x4)x100-[5/2:(X+206/100)]:1/2=89
a)1/2xX+3/2=7
b)3/2xX-2/7x(X-7/2)=18
tìm x
\(\frac{2xx-4,36}{0,125}\)=8
Xx3/2+7/2xX=2020
X:1/3+2/3=2
giúp mình nhé để mình nộp
a) X x 48 + 52 x X = 160
b) 7 x ( 8+2xX) = 210
c ) X x 56 + 44 x X + 285 x X = 130
d) ( x -12 ) x 17 : 11 = 51
e) 915 x X + 285 x X = 48
g) ( X x 7 + 8 ) : 5 = 10
h) (X + 5 ) x 19 : 13 = 57 4x(36 - 4 x X)= 32
i) (X : 2 + 50 ) : 5 = 12
giúp mình với plese
b)0,5xx+2/3xx+2/3=7/12
c)3/5-2/15:x=1/2
d)50%xx-2va1/2=2va5/6
e)(2va4/5xx-50):2/3-51
f)(4va1/2-2xx)x3va2/3=11/15
g)02/5-(2va1/2xx-3):15=1/10
h)(3/4+x)x1/1+5va1/6-1va1/6
b)0,5xx+2/3xx+2/3=7/12
c)3/5-2/15:x=1/2
d)50%xx-2va1/2=2va5/6
e)(2va4/5xx-50):2/3-51
f)(4va1/2-2xx)x3va2/3=11/15
g)02/5-(2va1/2xx-3):15=1/10
h)(3/4+x)x1/1+5va1/6-1va1/6
[3x X-15]x[14-2xX]
b,9 x (12-2xX)=54
c,Xx3,9 +Xx0,1=16
d,1,23:X-0,45:X=1,5
