Question

gia tri x thoa man 15/7-x/2=1/2

Answer 1

\(\frac{15}{7}-\frac{x}{2}=\frac{1}{2}\)

  \(\frac{x}{2}=\frac{15}{7}-\frac{1}{2}\)

    \(\frac{x}{2}=\frac{23}{14}\)

     \(14x=23.2\)

      \(14x=46\)

           \(x=\frac{23}{7}\)

Answer 2

\(\frac{15}{7}-\frac{x}{2}=\frac{1}{2}\)

\(\Rightarrow\frac{x}{2}=\frac{15}{7}-\frac{1}{2}\)

\(\Rightarrow\frac{x}{2}=\frac{23}{14}\)

\(\Rightarrow\frac{7x}{14}=\frac{23}{14}\)

\(\Rightarrow7x=23\Rightarrow x=\frac{23}{7}\)

Answer 3

15/7-x/2=1/2

x/2=15/7-1/2

x/2=23/14

7x/14=23/14

7x      =23

  x       =23/7