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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
\(x=2.\frac{3}{4}\)
\(x=1.5\)
\(60\%x+0,4x+x:3=2\\ \Leftrightarrow\left(60\%+0,4+\dfrac{1}{3}\right)x=2\\ \Rightarrow\dfrac{4}{3}x=2\\ \Rightarrow x=\dfrac{3}{2}\)
\(60\%x+0,4x+x:3=2\)
\(x.\left(60\%+0,4+\dfrac{1}{3}\right)=2\)
\(x.\dfrac{4}{3}=2\)
\(x=2:\dfrac{4}{3}\)
\(x=\dfrac{3}{2}\)
a) \(x=-\dfrac{3}{5}\times\dfrac{9}{7}=-\dfrac{27}{35}\)
b) \(x\left(0,4-\dfrac{1}{5}\right)=\dfrac{3}{4}\)
\(x=\dfrac{3}{4}:\dfrac{1}{5}=\dfrac{15}{4}\)
a, \(x=-3,5.\dfrac{9}{7}=-\dfrac{9}{2}\)
b, \(\dfrac{2}{5}x-\dfrac{1}{5}x=\dfrac{3}{4}\Leftrightarrow\dfrac{1}{5}x=\dfrac{3}{4}\Leftrightarrow x=\dfrac{3}{4}:\dfrac{1}{5}=\dfrac{15}{4}\)
B)\(\frac{11}{2}+x=\frac{3}{2}-7\)
\(\frac{11}{2}+x=\frac{3}{2}-\frac{14}{2}\)
\(\frac{11}{2}+x=\frac{-11}{2}\)
\(x=\frac{-11}{2}-\frac{11}{2}\)
\(x=\frac{-22}{2}\)
\(x=-11\)
A)\(\frac{1}{3}x+\frac{2}{5}\left(x+1\right)=0\)
\(\frac{1}{3}x+\frac{2}{5}x+\frac{2}{5}=0\)
\(x\cdot\left(\frac{1}{3}+\frac{2}{5}\right)=0-\frac{2}{5}\)
\(x\cdot\left(\frac{5}{15}+\frac{6}{15}\right)=-\frac{2}{5}\)
\(x\cdot\frac{11}{15}=\frac{-2}{5}\)
\(x=\frac{-2}{5}:\frac{11}{5}\)
\(x=\frac{-2}{11}\)
nhớ k cho mình nha
a) 1/3 x + 0,4 ( x + 1 ) = 0
<=> 1/3 x + 0,4 . x + 0,4 . 1 = 0
<=> 1/3 x + 0,4 x + 0,4 = 0
<=> x. ( 1/3 + 0,4 ) + 0,4 = 0
<=> x. 11/15 + 0.4 = 0
<=> x. 11/15 = -2/5
<=> x = -2/5 : 11/15 = - 6/11
b) 1 1/2 + x = 3/2 -7
<=> 3/2 + x = -11/2
<=> x = -11/2 - 3/2
<=> x = -7 < GOOD LUCK >
12%.x - 0,4 = 0,467
0,12.x - 0,4 = 0,467
0,12.x = 0,467 + 0,4
0,12.x = 0,867
x = 0,867 : 0,12
x = 7,225