60%.x+0,4.x+x:3=4
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60%.x+0,4.x+x:3=2
\(\frac{3}{5}\).x+\(\frac{2}{5}\).x+x:3=2
x.(\(\frac{3}{5}\)+\(\frac{2}{5}\))+x:3=2
x.1+x.\(\frac{1}{3}\)=2
x.(1+\(\frac{1}{3}\))=2
x.\(\frac{4}{3}\)=2
x=2:\(\frac{4}{3}\)
x=\(\frac{3}{2}\)
\(60\%x+0,4x+x:3=2\\ \Leftrightarrow\left(60\%+0,4+\dfrac{1}{3}\right)x=2\\ \Rightarrow\dfrac{4}{3}x=2\\ \Rightarrow x=\dfrac{3}{2}\)
\(60\%x+0,4x+x:3=2\)
\(x.\left(60\%+0,4+\dfrac{1}{3}\right)=2\)
\(x.\dfrac{4}{3}=2\)
\(x=2:\dfrac{4}{3}\)
\(x=\dfrac{3}{2}\)
BÀI 2
60%.x + 0,4.x + x:3= 2
\(\frac{60}{100}\)x + \(\frac{4}{10}\).x + x. \(\frac{1}{3}\)=2
\(\frac{3}{5}\).x + \(\frac{2}{5}\).x + x.\(\frac{1}{3}\)=2
(\(\frac{3}{5}\)+ \(\frac{2}{5}\)+ \(\frac{1}{3}\)) .x =2
\(\frac{4}{3}\).x =2
x = 2: \(\frac{4}{3}\)
x = \(\frac{3}{2}\)
Vậy x=\(\frac{3}{2}\)
k cho mik nha các bạn
Bài 2 :
60%x + 0.4x + x : 3 = 2
\(x.\left(\frac{60}{100}+\frac{2}{5}+\frac{1}{3}\right)\)= 2
\(x.\frac{4}{3}\)= 2
\(x=2.\frac{3}{4}\)
\(x=1.5\)
9: =>x-3=2
=>x=5
10: =>x+1/2=1/5 hoặc x+1/2=-1/5
=>x=-7/10 hoặc x=-3/10
12:
a: =>x^2=900
=>x=30 hoặc x=-30
b: =>x=1/18*27=3/2
7: =>|x-0,4|=1,1
=>x-0,4=1,1 hoặc x-0,4=-1,1
=>x=1,5 hoặc x=-0,7
60%.\(x\) + 0,4.\(x\) + \(x\): 3 = 4
0,6\(x\) + 0,4\(x\) + \(\dfrac{1}{3}\)\(x\) = 4
(0,6 + 0,4 + \(\dfrac{1}{3}\)).\(x\) = 4
\(\dfrac{4}{3}\).\(x\) = 4
\(x\) = 4: \(\dfrac{4}{3}\)
\(x\) = 3
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