Question

x+10/27=x/9 tìm x e Z

 

Answer 1

Ta có:\(\frac{x+10}{27}=\frac{x}{9}\Rightarrow\left(x+10\right).9=27x\Rightarrow9x+90=27x\)

\(\Rightarrow90=27x-9x\)

\(\Rightarrow\)\(90=18x\)

\(\Rightarrow x=90:18\)

\(\Rightarrow x=5\)

Vậy x=5 thỏa mãn

Answer 2

\(\frac{x+10}{27}=\frac{x}{9}\)

=>(x+10).9=27.x

=>9x+90=27x

=>27x-9x=90

=>18x=90

=>x=5

Vậy x=5