Question

TÌM X: X *1/2+3/2*X=4/5

làm chi tiết giúp mình nha,ai nhanh mình tk cho 

thanks

Answer 1

x * 1 / 2 + 3/ 2 * x = 4 / 5

x * ( 1 / 2 + 3 / 2 ) = 4 / 5 

x * 2                     = 4 / 5 

x                           = 2 / 5

Answer 2

X x 1/2 + 3/2 x X = 4/5

X x (1/2 + 3/2) = 4/5

X x 2 = 4/5

X = 4/5 : 2

X = 2/5

Answer 3

x * 1/2 + 3/2 * x = 4/5

x * ( 1/2 + 3/2 ) = 4/5

x * 2 = 4/5

     x. = 4/5 : 2

     x. = 2/5

   Vậy x = 2/5

Answer 4

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

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

\(\Rightarrow x\times2=\frac{4}{5}\)

\(\Rightarrow x=\frac{4}{5}:2=\frac{4}{5}.\frac{1}{2}=\frac{4}{10}=\frac{2}{5}\)