Question

qual a resposta -x+10=10+x?
2(-x-10)=10 + x?

Answer 1

Resposta:

-x+10=10+x

10-10=x+x

0=2x

2.(-x-10)=10+x

-2x-20=10+x

-2x-x=10+20

-3x=30

x=30/-3

x=-10

Answer 2

Resposta:

- x + 10 = 10 + x

- x = x

- x - x = 0

- 2x = 0

x = 0/-2

x = 0

2(- x - 10) = 10 + x

- 2x - 20 = 10 + x

- 2x - x = 10 + 20

- 3x = 30

x = 30/-3

x = - 30/3

x = - 10