Question

resolva a equação a seguir​

Answer 1

Resposta:

a) 2x + 1 = 3

2x = 3 - 1

2x = 2

x = 2 / 1

x = 1

b) 5x - 2 = 8

5x = 8 + 2

5x = 10

x = 10 / 5

x = 2

c) - 10x - 8 - 2x = - 4x + 16 - 6x

- 10x - 2x + 4x + 6x = 16 + 8

- 12x + 10x = 24

- 2x = 24 . ( - 1)

2x = - 24

x = -24 / 2

x = - 12

d) x - 3x - 3 = 13

x - 3x = 13 + 3

- 2x = 16 . ( - 1)

2x = - 16

x = - 16 / 2

x = - 8

Answer 2

A) 2x + 1 = 3
2x = 3 - 1
2x = 2
reposta: x = 1

B) 5x - 2 = 8
5x = 8 + 2
5x = 10
resposta: x = 2

C) - 10x - 8 - 2x = -4x + 16 - 6x
- 12x - 8= - 4x + 16 - 6x
- 12x - 8= - 10x + 16
- 12x + 10x - 8 = 16
- 12x + 10x = 16 + 8
- 2x = 16 + 8
- 2x = 24
resposta: x = - 12

D) x - 3x - 3 = 13
-2x - 3 = 13
-2x = 13 + 3
-2x = 16
resposta: x = -8