So sánh:
\(\frac{-24}{35}\) và \(\frac{-19}{30}\)
\(\frac{2013}{2014}\)- \(\frac{2014}{2015}\) và \(\frac{-1}{2013.2014}\)
\(\frac{-18}{91}\)và \(\frac{-23}{114}\)
Tính nhanh :
\(\frac{1}{2.3}\)+ \(\frac{1}{6.5}\)+ \(\frac{1}{10.7}\)+ \(\frac{1}{14.9}\)+.....+ \(\frac{1}{198.101}\)
Mng giúp em vs :(((
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) \(\left(x-\frac{1}{5}\right).\left(1\frac{3}{5}+2x\right)=0\)
\(\frac{x+1}{2}+\frac{x+1}{3}+\frac{x+1}{4}=\frac{x+1}{5}+\frac{x+1}{6}\)
tìm GTNN của
D= -5 +\(\frac{-8}{4+\left|5x+7\right|+24}\)
E= \(\frac{6}{5}-\frac{14}{5\left|6y-8\right|+35}\)
F=\(\frac{15}{12}\)- \(\frac{28}{3\left|x-3y\right|+\left|2x+1\right|+3,5}\)
GIÚP MÌNH VỚI!!!!!!!!!!!!!!!
Tìm x, biết:
\(\frac{5}{6}\)- (\(\frac{1}{2}\)+ x) = \(\frac{1}{5}\) - 2x + (\(\frac{1}{3}\) + \(\frac{1}{5}\))
Tìm x,y:
\(\frac{2}{3}\)- \(\frac{1}{3}\)( x-\(\frac{3}{2}\)) - \(\frac{1}{2}\)(2x+1) = 5
Giải nhanh giúp mn, mn sẽ tk cho!!!❤❤❤
Tìm x biết:
a) | x+1,5 |= 2
b) \(\frac{2}{5}\)+| x+1 |=\(\frac{3}{4}\)
c) \(\frac{4}{5}\)-| x-\(\frac{1}{6}\) |=\(\frac{2}{3}\)
d) | x-\(\frac{2}{3}\) |+\(\frac{5}{4}\)=0
Làm giúp mk vs mk đang cần gấp nha!
Tính :
(\(\frac{1}{38}\)- 1).(\(\frac{1}{37}\)-1).(\(\frac{1}{36}\)-1).......(\(\frac{1}{2}\)-1)
Giúp mn nha! Mn sẽ tk cho.
1. Tìm x, biết:
a. \(3x-|x+15|=\frac{5}{4}\)
b. \(\left|x-0,6\right|< \frac{1}{3}\)
c. \(\left|x+\frac{7}{2}\right|\ge\left|-3,5\right|\)
d. \(\left|x-1\right|\le3\frac{1}{4}\)
e. \(\left|2x-1\right|>\left|-\frac{3}{4}\right|\)
\(\left|3x:2+1\right|-\frac{3}{2}=\frac{1}{2}\)