Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(\frac{2}{3}.x-\frac{3}{2}.\left(x-\frac{1}{2}\right)=\frac{5}{12}\)
\(\Leftrightarrow\frac{2}{3}.x-\frac{3}{2}.x+\frac{3}{4}=\frac{5}{12}\)
\(\Leftrightarrow x.\left(\frac{2}{3}-\frac{3}{2}\right)=\frac{5}{12}-\frac{3}{4}\)
\(\Leftrightarrow x.\frac{-5}{6}=\frac{-4}{12}\)
\(\Leftrightarrow x=\frac{-4}{12}:\frac{-5}{12}\)
\(\Leftrightarrow x=\frac{4}{5}\)
Vậy : \(x=\frac{4}{5}\)
a: =>1/3:x=3/5-2/3=9/15-10/15=-1/15
=>x=-1/3:1/15=5
b: \(\Leftrightarrow x\cdot\dfrac{2}{3}-3=\dfrac{2}{5}\cdot\left(-10\right)=-4\)
=>x*2/3=-1
=>x=-3/2
c: =>2x+1=4 hoặc 2x+1=-4
=>x=3/2 hoặc x=-5/2
h: =>x-3=4
=>x=7
g: =>2x-1=3
=>2x=4
=>x=2
f: \(\Leftrightarrow x\cdot\left(\dfrac{3}{2}-\dfrac{7}{3}\right)=\dfrac{3}{2}-\dfrac{2}{3}\)
=>x*-5/6=5/6
=>x=-1
d: =>|2x-1|=3
=>2x-1=3 hoặc 2x-1=-3
=>x=-1 hoặc x=2
a: \(=\dfrac{2}{3}+\dfrac{1}{3}\cdot\dfrac{-8+15}{18}:17\)
\(=\dfrac{2}{3}+\dfrac{1}{3}\cdot\dfrac{7}{18}\cdot\dfrac{1}{17}\)
\(=\dfrac{619}{918}\)
b: \(=\left(3-7+\dfrac{1}{4}\right)\cdot\left(4-\dfrac{31}{6}+\dfrac{9}{4}\right)\)
\(=\dfrac{-15}{4}\cdot\dfrac{13}{12}=\dfrac{-195}{48}=\dfrac{-65}{16}\)
c: \(=\dfrac{3}{4}-\dfrac{3}{2}+\dfrac{1}{2}\cdot\dfrac{12}{5}-\dfrac{1}{4}\)
\(=\dfrac{1}{2}-\dfrac{3}{2}+\dfrac{6}{5}=\dfrac{6}{5}-1=\dfrac{1}{5}\)
d: \(=\dfrac{5}{4}\cdot\dfrac{1}{4}:\left(\dfrac{21}{16}-\dfrac{3}{2}\right)\)
\(=\dfrac{5}{16}:\dfrac{-3}{16}=\dfrac{-5}{3}\)
\(\dfrac{5}{4}+1,5-\dfrac{2}{3}=\dfrac{11}{4}-\dfrac{2}{3}=\dfrac{25}{12}\)
\(\dfrac{5}{2}\)