Question

- x 1 = - 7
2 x + 2 = 4
2 x + 8 = 16
- 3 x + 40 = 10
- x - 8 = 0

AYUDA ;(

Answer 1

Respuesta:

- x 1 = - 7

−x+7=0

(−1)⋅x+(7)=0

x=−(7)−1

x=7

2 x + 2 = 4

2x−2=0  

(2)⋅x+(−2)=0

x=−(−2)2

x=−(2)⋅(−1)(2)=1

2 x + 8 = 16

2x−8=0

(2)⋅x+(−8)=0

x=−(−8)2

x=−(2)⋅(−4)(2)=4

- 3 x + 40 = 10

−3x+30=0

(−3)⋅x+(30)=0

x=−(30)−3

x=−(3)⋅(10)(3)⋅(−1)=10

- x - 8 = 0

−x−8=0

(−1)⋅x+(−8)=0

x=−(−8)−1

x=−8