Question

a. x – [ – 2x – (x – 1)] = x + (– 3x + 11) con la comprobacion porfis ​

Answer 1

Respuesta:

2

Explicación paso a paso:

x – [ – 2x – (x – 1)] = x + (– 3x + 11)

x – [ – 2x – x + 1] = x – 3x + 11

x + 2x + x – 1 = x – 3x + 11

4x – 1 = –2x + 11

4x + 2x = 11 + 1

6x = 12

x = 12/6

x = 2

Comprobación:

x – [ – 2x – (x – 1)] = 6 + (– 3x + 11)

2 – [ – 2.2 – (2 – 1)] = 2 + (– 3.2 + 11)

2 – [ – 4 – 1] = 6 + (–6 + 11)

6 – [–5] = 6 + 5

6 + 5 = 6 + 5

11 = 11