Question

tim x biet:x+16/9=x/7

Answer 1

toi khong biey xin hay giup toi

Answer 2

X=56/27

Answer 3

\(x+\frac{16}{9}=\frac{x}{7}\)

\(\frac{16}{9}=\frac{x}{7}-\frac{x}{1}\) 

\(\frac{16}{9}=\frac{x}{7}-\frac{7x}{7}\)

\(\frac{19}{9}=\frac{\left(-6\right)x}{7}\)

\(\frac{133}{63}=\frac{\left(-54\right)x}{63}\)

\(\Rightarrow133=\left(-54\right)x\)

\(\Rightarrow133:\left(-54\right)=x\)

\(\Rightarrow-2,4629=x\)

Answer 4

\(x+\frac{16}{9}=\frac{x}{7}\) = \(\frac{9x}{9}+\frac{16}{9}=\frac{x}{7}\) = \(\frac{9x+16}{9}=\frac{x}{7}\) 

  \(\left(9x+16\right).7=x.9\) 

     \(63x+112=x.9\) 

       \(63x-9x=-112\)

                  \(54x=-112\)

                       \(x=\left(-112\right):54\)

                       \(x=\frac{-56}{27}\)