Question

3x – [(x - 4) – (2x- 1)] = 20

Alguien puede ayudar, please..

Answer 1

Respuesta:

3x – [(x - 4) – (2x- 1)] = 20

3x – [x - 4 – 2x+ 1)] = 20

3x – [-x-3 ] = 20

3x + x + 3 = 20

4x = 20- 3

4x = 17

x = 17 / 4