Question

Tìm x:

8x = 7,8 . x + 25

Nhanh mình tick cho

Answer 1

8x = 7,8x + 25

\(\Rightarrow\)8x - 7,8x = 25

\(\Rightarrow\)0,2x = 25

\(\Rightarrow\)x = 25 : 0,2

\(\Rightarrow\)x = 125

Answer 2

=>8x-7,8x=25

=>0,2x=25

=>x=125

Answer 3

       8x = 7,8x + 25

<=> 8x - 7,8x = 25

<=> 0,2x        = 25

<=> x             = 25 : 0,2

<=> x             = 125

Answer 4

\(8x=7,8x+25\)

\(\Leftrightarrow8x-7,8x=25\)

\(\Leftrightarrow x\left(8-7,8\right)=25\)

\(\Leftrightarrow0,2x=25\)

\(\Leftrightarrow x=25\div0,2\)

\(\Leftrightarrow x=125\)