\(\left|x-1\right|=x\)
\(\Rightarrow\)\(\left[{}\begin{matrix}x-1=x\\x-1=-x\end{matrix}\right.\)
\(\Rightarrow\)\(\left[{}\begin{matrix}x=1+x\left(loại\right)\\x+x=1\end{matrix}\right.\)
\(\Rightarrow2x=1\)
\(x=1:2\)
\(x=\frac{1}{2}\)
Vậy \(x=\frac{1}{2}\)
tìm x , biết
1 . 3 3/4 : x = 1 1/2
2 . 1 1/4 x + 2 1/2 = 1 1/4
3 . ( 3 1/3 - 1 1/2 x ) : 5/6 = 1 1/2
4 . ( 3/7 x - 1 ) : 4 = -1/28
5 . 2 2/3 x - x = 3 3/4
6 . | x - 3/4 | = 1
7 . | 2/3 x + 1/3 | = 5/6
tìm x , biết :
a . 1,5 . x + 2,5 = 1
b . ( 0,5 . x - 1,3 ) : 0,5 = -1,7
c . 1,75 .x - 1,5 . x = 0,84
d . x + 75% . x + 125% = 1
e . x - 25% .x + 75% = 1
f . | x - 1,5 | = 2,37
\(1\dfrac{1}{15}\) x \(1\dfrac{1}{16}\) x \(1\dfrac{1}{17}\) x ..... x \(1\dfrac{1}{2016}\) x \(1\dfrac{1}{2017}\)
Tìm x :\(\dfrac{ }{ }\)\(\dfrac{1}{2}\)x -\(\dfrac{3}{4}\)=\(\dfrac{1}{3}\)x +\(1\dfrac{2}{5}\)
tìm x , biết :
a . ( x -2,5 ) : 2 1/2 - 2,5 = -1 1/4
b . ( 2,5 x - 3,6 ) : 1 5/7 = -1
c . ( 3 3/4 - 2x ) . 1 1/3 = 2 1/9
1 . tính :
6/7 + -5/8 : ( -5 ) - 3/16 . ( -2 )2
2 .tính nhanh :
-17/25 . 20/33 + -17/25 . 13/3 + -3/25
3 . tìm x , biết :
a . 3/5 . x - 7/10 . x = -1/2
b . ( x -2,5 ) : 2 1/2 - 2, = 1 1/4
c . ( 2,5 x - 3,6 ) : 1 5/7 = -1
câu 1: tìm x, biết
a, 5,2 x + 7 2/5 = 6 3/4
b,2,4 :( -1/2 -x)=1 3/5
tìm x biết
x - 3/4 . x + 1/2 = 0
tìm x biết :
2 2/3 x - 1 1/2 = -1/2
