=> x+5x= 1,35

     x = 1,35: 6

     x = 0,225

k cho mình nhé

nhanh hộ nhé

X+X x 5=1.35

X x 6 = 1.35

X       =1.35 : 6

X       =0.225

\(\frac{1,35}{0,2}=\frac{1,25}{0,1x}\)

\(\Rightarrow\)1,35.0,1x=1,25.0,2

0,135x=0,25

\(\Rightarrow\)x=0,25:0,135=\(\frac{50}{27}\)

\(\dfrac{1,35}{0,2} = \dfrac{1,25}{0,1x}\)

\(\Rightarrow\) \(1,35 . 0,1x = 1,25 .0,2\)

\(\Leftrightarrow\) \(1,35 . 0,1x = 0,25\)

\(\Leftrightarrow\) \(0,1x= 0,25 : 1,35\)

\(\Leftrightarrow\) \(0,1x=\dfrac{5}{27}\)

\(\Leftrightarrow\) \(x= \dfrac{50}{27}\)

Vậy \(x= \dfrac{50}{27} \)

\(\frac{1,35}{0,2}=\frac{1,25}{0,1x}\)

\(\Rightarrow1,35.0,1x=0,2.1,25\)

\(\Rightarrow1,35.0,1x=0,25\)

\(\Rightarrow0,1x=0,25:1,35\)

\(\Rightarrow0,1x=\frac{5}{27}\)

\(\Rightarrow\frac{1}{10}x=\frac{5}{27}\)

\(\Rightarrow x=\frac{5}{27}:\frac{1}{10}\)

\(\Rightarrow x=\frac{50}{27}\)

Vậy \(x=\frac{50}{27}.\)

Chúc bạn học tốt!

\(\frac{35}{x}=\frac{15}{12}\Leftrightarrow x=35.12:15=28\)

\(-\frac{2,6}{x}=-\frac{12}{42}\Leftrightarrow\frac{-2,6}{x}=-\frac{2}{7}\Leftrightarrow x=-2,6.7:\left(-2\right)=\frac{91}{10}\)

\(\frac{125}{10}=\frac{x}{45}\Leftrightarrow x=125.45:10=562,5\)

\(\frac{x^2}{6}=\frac{24}{25}\Leftrightarrow x^2=6.24:25=\frac{144}{25}\Leftrightarrow x=\sqrt{\frac{144}{25}}\Leftrightarrow x=\frac{12}{5}\)

1; \(\dfrac{35}{x}\) = \(\dfrac{15}{12}\)  (\(x\ne\) 0)

⇒ \(x\) = 35 : \(\dfrac{15}{12}\)

⇒ \(x\) = 28

Vậy \(x=28\)

2; - \(\dfrac{2,6}{x}\) =  \(\dfrac{-12}{42}\) (đk \(x\) ≠ 0)

     \(x\) = - 2,6 : (\(\dfrac{-12}{42}\))

    \(x\) =  - \(\dfrac{13}{5}\) : \(\dfrac{-2}{7}\)

    \(x\) = - \(\dfrac{13}{5}\) x \(\dfrac{7}{-2}\)

    \(x\) = \(\dfrac{91}{10}\) 

Vậy \(x\) = \(\dfrac{91}{10}\)

X+ 0,1+X+0,2+...+X+0,5=5,55

<=> 5x X + (0,5+0,1) x 5 :2 = 5,55

<=> 5 x X + 1,5 = 5,55

<=> 5 x X= 5,55- 1,5

<=> 5 x X= 4,05

<=>X= 4,05:5

<=>X=0,81

mik cần gấp ạ

Ta có: x+0,1+x+0,2+x+...+x+0,5=5,55

nên 5x+1,5=5,55

\(\Leftrightarrow5x=4,05\)

hay x=0,81

Vậy: x=0,81

x=2 nha bạn

Nhớ k cho mình nha

Chúc các bạn học giỏi

bạn giải dùm mình ra hết đc ko

(x-5)x \(\frac{30}{100}\)=\(\frac{20}{100}\)X+5

30x-150=20x500

10x=650

x=65

= (0,2 x 6) x 317 + 0,12 x 10 x 352 + 331 x 1/10 x 12

= 1,2 x 317 + 1,2 x 352 + 331 x 1,2

= 1,2 x (317 + 352 + 331)

= 1,2 x 1000

= 1200

0.2 :X = X : 80

0:X=X:80

0:Xx80=X

0x80=X

X=0

Tìm x hả bạn