Tìm x biết: \(\left|x-\dfrac{1}{3}\right|\)+\(\dfrac{4}{5}\)\(=\left|-3,2+\dfrac{2}{5}\right|\)
Tìm X, biết
a, X+ \(\dfrac{5}{6}=\dfrac{2}{5}-\dfrac{-2}{3}\)x
b,\(1\dfrac{2}{5}x+\dfrac{3}{7}=\dfrac{-4}{5}-\dfrac{1}{5}x\)
c,\(\dfrac{1}{3}-\dfrac{2}{3}\left(x-\dfrac{1}{2}\right)=1\)
Tìm x biết:
a) \(\left|x-\dfrac{1}{2}\right|+\left|x+2\right|=\dfrac{3}{4}\)
b) \(\left(\dfrac{2}{3}-2x\right).1\dfrac{1}{2}=\dfrac{3}{4}\)
c) \(\left|x-1\right|+2\left(x+4\right)=10\)
d) \(\dfrac{11}{12}+\dfrac{11}{12.23}+...+\dfrac{11}{89.100}+x=1\dfrac{2}{3}\)
e) \(\left(\dfrac{2}{11.13}+\dfrac{2}{13.15}+...+\dfrac{2}{19.21}\right)-x+4\dfrac{221}{231}=2\dfrac{1}{3}\)
tìm x biết
a) /4.x/ - / -12.5/ = / -7.3 /
b) / x / + x = \(\dfrac{1}{3}\)
c) / x / - x =\(\dfrac{3}{4}\)
d) / x-2 / = x
e) / x+2 / = x
Tớ cần gấp!! Mong các bạn giúp ..
Tìm \(x\) biết :
a) \(\left|x-1,7\right|=2,3\)
b) \(\left|x+\dfrac{3}{4}\right|-\dfrac{1}{3}=0\)
Bài 1: Tìm x biết
a) \(\left|x-\dfrac{1}{3}\right|=2\dfrac{1}{5}\)
b) \(\left|-x+\dfrac{2}{5}\right|+\dfrac{1}{2}=3,5\)
c) \(\left|x+\dfrac{1}{4}\right|-\dfrac{3}{4}=5\%\)
Bài 2: Rút gọn biểu thức sau nếu x < -1,3
A= \(\left|x+1,3\right|-\left|x-2,5\right|\)
B= \(\left|-x-1,3\right|-\left|x-2,5\right|\)
Bài 3: Tìm x biết
a) \(\left|x-1\right|=x-1\)
b) \(\left|x-1\right|=1-x\)
c) \(x-1< \left|x-1\right|\)
d) \(x-1>\left|x-1\right|\)
Bài 4 : Tìm x,y biết :
a)\(3\dfrac{1}{4}-\dfrac{1}{4}\left|x-0,25\right|=\dfrac{1}{4}\)
b)\(\left|x-3\right|=-4\)
c)\(\left|x-\dfrac{1}{2}\right|+1=0\)
d)\(\left|x-\dfrac{1}{5}\right|=\left|\dfrac{3}{4}-2x\right|\)
e)\(\left|x+2\right|3=0\)
f)\(\left|2x-1\right|-\left|x+2\right|=0\)
g)\(\left|x+2\right|+\left|y-1\right|=0\)
h)\(\left|2x\right|+\left|y+\dfrac{1}{4}\right|=0\)
a) Tìm |x| biết:
x=\(\dfrac{1}{5};\) x=0,37; x=\(-1\dfrac{2}{3};\) x=0
b) Tìm x, biết:
|x|=3
Tìm \(x\in\mathbb{Q}\), biết :
a) \(\left|x\right|=2,1\)
b) \(\left|x\right|=\dfrac{3}{4},x< 0\)
c) \(\left|x\right|=-1\dfrac{2}{5}\)
d) \(\left|x\right|=0,35,x>0\)
