\(\left|x-\dfrac{4}{7}\right|=\dfrac{11}{7}\)
\(\Leftrightarrow\left[{}\begin{matrix}x-\dfrac{4}{7}=\dfrac{11}{7}\\x-\dfrac{4}{7}=-\dfrac{11}{7}\end{matrix}\right.\)
\(\Leftrightarrow\left[{}\begin{matrix}x=\dfrac{15}{7}\\x=-1\end{matrix}\right.\)
tìm |x| thuộc Q biết
a, x = -4/7
b, x= -3/11
c, x= -0,749
d, x= -5_ 1/7
-5 1/7 là hỗn số
mk sẽ tick cho
a) |x-1/3|=11/5 b)2|2x-3|=1/2
c)2|3x-1|+1=5 d)3/2+4/5|x-3/4|=7/4
e)|2x-5|=4 f)|x/2-1|=3
Tính giá trị của biểu thức:
\(\dfrac{\dfrac{3}{4}-\dfrac{3}{5}+\dfrac{3}{7}+\dfrac{3}{11}}{\dfrac{13}{4}-\dfrac{13}{5}+\dfrac{13}{7}+\dfrac{13}{11}}\)
Hnay nộp rồi, nhanh nha
1.(x+1)/35 + (x+3)/33 = (x+5)/33 + (x+7)/20
2. (X+1)/12+ (X+2)/13 = (X+3)/14+ (X+4)/15
3. (X-85)/15+ (X-75)/13+(X-67)/11+ (X-64)/9=10
4. (X-1)/13-(2X-13)/15=(3X-15)/27- (4X-27)/29
Tìm x, biết
a, | x - 5 | + 5 = x
b, | x + 7 | - x = 7
c, | 3x - 4 | + 4 = 3x
d, |7 - 2x | + 7 = 2x
Bài 4: Tính hợp lý
a) \(A=\left(\left|\frac{-3}{4}\right|+\left|\frac{-2}{5}\right|\right):\frac{3}{7}+\left(\frac{-3}{5}+\left|\frac{-1}{4}\right|\right):\frac{3}{7}\)
b) \(B=2\frac{5}{23}-\left(\frac{-7}{9}\right)-\left|\frac{-5}{23}\right|+\frac{12}{9}+\left|-0,75\right|\)
Bài 5 : Tìm x :
\(\frac{11}{12}-\left(\frac{2}{5}+x\right)=\left|\frac{-2}{3}\right|\)
b) \(\left|x\right|:\left(\frac{1}{9}-\frac{2}{5}\right)=\frac{-1}{2}\)
c) \(\left(x-\frac{1}{5}\right).\left(1\frac{3}{5}+2x\right)=0\)
Tìm x biết:
a) |x - 3/5| < 1/3
b) |x + 11/2| > |- 5,5|
c) 2/5 < |x - 7/5| < 3/5
Tìm số nguyên x sao cho 4/7<|x-(8/7)|<5/7
Giúp mình nhé
a)4.(2-|x|)+5.|x|=7
b)|5.x-3|=|7-x|
giúp mình nha!
