Question

13*(x-3)-26*(x-3)=0

Answer 1

13 * ( x - 3 ) - 26 * ( x - 3 ) = 0 

-13 * ( x - 3 ) = 0 

x - 3 = 0 : -13 

x - 3 = 0 

x = 0 + 3 

x = 3 

Answer 2

\(13\left(x-3\right)-26\left(x-3\right)=0\)

\(\left(13-26\right)\left(x-3\right)=0\)

\(-13\left(x-3\right)=0\)

\(x-3=0\)

\(x=3\)

Answer 3

Ta có: \(13\cdot\left(x-3\right)-26\cdot\left(x-3\right)=0\)

\(\Leftrightarrow-13\cdot\left(x-3\right)=0\)

\(\Leftrightarrow x-3=0\)

\(\Rightarrow x=3\)

Vậy x = 3