Question

(×-1).2-5= -1

es para un examen​

Answer 1

Respuesta: x = 3

Explicación paso a paso:

(x-1) • 2 - 5 = - 1

(x)(2) + (-1)(2) -5 = -1

2x - 2 - 5 = - 1

2x - 7 = - 1



2x = -1 + 7

2x = 6

x = 6 /2

x = 3

Comprobación

(3 - 1) • 2 - 5 = - 1

2 • 2 - 5 = - 1

4 - 5 = - 1

- 1 = - 1