Question

hallar la x
2.(x-5=)-40
4.(x+1)=2x-40​

Answer 1

Respuesta:

x = - 22

x = - 84

Explicación paso a paso:

2 ( x - 5 ) = - 40

2x - 10 = - 40

2x = - 40 + 10

2x = -30

x = $\frac{-30} {2}$

x = -15

Comprobamos

2 ( - 15 - 5 ) = - 40

2 ( - 20 ) = - 40

- 40 = - 40

Esta correcto!

4 ( x + 1 ) = 2x - 40

4x + 4 = 2x - 40

4x - 2x = - 40 -4

2x = - 44

x = $\frac{-44}{2}$

x = - 22

Comprobamos

4 ( - 22 + 1 ) = 2 (  - 22 ) - 40

4 ( - 21 ) = - 44 - 40

- 84 = - 84

Está correcto!!

Espero te sirva ;)

Saludos!