Respuesta :

Answer:

2. 4x = 7x - 21

Step-by-step explanation:

[tex]4x = 7(x - 3) \\ 4x = 7x - 21 \\ 21 = 7x - 4x \\ 21 = 3x \\ \frac{21}{3} = x \\ 7 = x \\ [/tex]