1) 14x - 56 = 0
⇔14x = 56
⇔x = 4
2) 4 - 2x = 0
⇔2x = 4
⇔x = 2
1) Ta có: 14x-56=0
\(\Leftrightarrow14x=56\)
hay x=4
Vậy: x=4
2) Ta có: 4-2x=0
\(\Leftrightarrow2x=4\)
hay x=2
Vậy: x=2
1) 14x - 56 = 0 => 14x = 56 => x = 4
2) 4 - 2x = 0 => 2x = 4 => x = 2