y x 2 + y : 0,125 = 20,15

y x 2 + y x 4 = 20,15

y x ( 2 + 4 ) = 20,15

y x 8 = 20,15

y = 20,15 : 8

y = 2,51875

mk nhanh nhất k mình nhé

Y x 2 + Y x 8 = 20,15

Y x ( 2 + 8 ) = 20,15

Y x 10 = 20,15

Y = 20,15 : 10

Y = 2,015

Y x 2 + Y x 8 = 20,15

Y x ( 2 + 8 ) = 20,15

Y x 10 = 20,15

Y = 20,15 : 10 

Y = 2,015

Đúng 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.............%

\(20,15\times0,125+0,875\times20,15-20,15\\ =20,15\times\left(0,125+0,875-1\right)\\ =20,15\times0\\ =0\)

\(y.\left(20+16\right)=972\Leftrightarrow36y=972\Leftrightarrow y=27\)

y x (20+ 16) = 972 

y  x 36 = 972

y = 972 : 36

y = 27

=>10y=26,68

hay y=2,668

\(\Rightarrow y\times\left(3,2+6,8\right)=26,68\\ \Rightarrow y\times10=26,68\\ \Rightarrow y=26,68:10\\ \Rightarrow y=2,668\)

\(y=12-\left(\dfrac{1}{3}\times4\right)=12-\dfrac{4}{3}=\dfrac{32}{3}\)

\(y=\left(\dfrac{12}{35}\times\dfrac{14}{9}\right)-\dfrac{2}{5}=\dfrac{8}{15}-\dfrac{2}{5}=\dfrac{2}{15}\)

a) \(y+\dfrac{1}{3}\times4=12\)

\(y+\dfrac{1}{3}=12:4\)

\(y+\dfrac{1}{3}=3\)

\(y=3-\dfrac{1}{3}\)

\(y=\dfrac{8}{3}\)

b) \(\dfrac{2}{5}+y=\dfrac{12}{35}\times\dfrac{14}{9}\)

    \(\dfrac{2}{5}+y=\dfrac{8}{15}\)

           \(y=\dfrac{8}{15}-\dfrac{2}{5}\)

          \(y=\dfrac{2}{15}\)

2/15

y+23=6y+17

=> 5y=6

=>y=6/5

đúng rồi

y + 23 = 6 x y + 17

=> 5 x y = 6

=> y = 6/5

\(y-36=y\div y+1\)

\(y-36=1+1\)

\(y-36=2\)

            \(y=2+36\)

            \(y=38\)

Vậy \(y=38\)

\(y-36=y:y+1\)    

\(y-36=1+1\)    

\(y-36=2\)   

\(y=2+36\)   

\(y=38\)

Y x 100 = 388600

Y = 3886

y×100=388600

y=388600÷100

y=3886

Y x 100 = 388 600

Y           = 388 600 ：100

Y           = 3886