60%x + 0,4x + x:3 = -2

3/5x + 2/5x + 1/3x = -2

(3/5 + 2/5 + 1/3)x = -2

4/3 x = -2

x= -2 : 4/3

x= -3/2

ta có :\(x=\frac{3}{2}\)

k nha

X=2/(60%+0.4+1/3)

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\(60\%x+0,4x+x:3=2\)

\(\Leftrightarrow\frac{3}{5}x+\frac{2}{5}x+\frac{1}{3}x=2\)

\(x\left(\frac{3}{5}+\frac{2}{5}+\frac{1}{4}\right)=2\)

\(x.\frac{4}{3}=2\)

\(x=2:\frac{4}{3}\)

\(x=\frac{3}{2}\)

60%x+0,4x+x:3=2

\(\frac{60}{100}+x\frac{2}{5}+x:3=2\)

\(x.\left(\frac{3}{5}+\frac{2}{5}\right)+x:3=2\)

\(x.1+x:3=2\)

\(x.2=\left(3:1\right)\)

\(x.2=3\)

\(x=3:2\)

\(x=1,5\)

\(x:60\%+0,4x=2\)
\(\Rightarrow\dfrac{5}{3}x+0,4x=2\)
\(\Rightarrow\left(\dfrac{5}{3}+0,4\right)x=2\)
\(\Rightarrow\dfrac{31}{15}x=2\)
\(\Rightarrow x=2:\dfrac{31}{15}\)
\(\Rightarrow x=\dfrac{30}{31}\)
#DarkPegasus

60% + 0,4x=2

0,4x=2-60%

0,4x=2-0,6

0,4x=1,4

x=1,4:0,4

x=3,5

           Vậy:...

 nhớ ticks nhe

\(\dfrac{60}{100}+0,4x=2\)

\(\dfrac{3}{5}+0,4x=2\)

\(0,4x=2-\dfrac{3}{5}\)

\(0,4x=\dfrac{7}{5}\)

\(x=\dfrac{7}{5}:0,4\)

\(x=3,5\)

\(60\%.x-0,4.x+x:3=2\)

\(\dfrac{3}{5}.x-\dfrac{2}{5}.x+\dfrac{1}{3}.x=2\)

\(x\left(\dfrac{3}{5}-\dfrac{2}{5}+\dfrac{1}{3}\right)=2\)

\(x.\dfrac{8}{15}=2\)

\(x=2:\dfrac{8}{15}\)

\(x=\dfrac{15}{4}\)

60%x + 0,4x + x:3 = 2

\(\frac{3}{5}x+\frac{2}{5}x+\frac{1}{3}x=2\)

\(\left(\frac{3}{5}+\frac{2}{5}+\frac{1}{3}\right)x=2\)

\(\frac{4}{3}x=2\)

\(x=2:\frac{4}{3}\)

\(x=\frac{3}{2}\)

bạn đỏi ra đi, rồi lấy thừa số mà tính

`Answer:`

\(60\%x+0,4x+x:3=2\)

\(\Leftrightarrow\frac{3}{5}x+\frac{2}{5}x+x.\frac{1}{3}=2\)

\(\Leftrightarrow x.\left(\frac{3}{5}+\frac{2}{5}+\frac{1}{3}\right)=2\)

\(\Leftrightarrow\frac{4}{3}x=2\)

\(\Leftrightarrow x=\frac{3}{2}=1,5\)

Vậy chọn A.