Question

a) 5x + 1 = 36 d) 15x - 13 = -39 - 11x
b) 7x = 4x + 5 e) 21 + 9x = 15x + 33
c) 9x - 7 = 5x + 13 f) 16 - 11x + 12 = -15x

Answer 1

Resposta:

Explicação passo a passo:

A) 5x + 1 = 36

5x = 35

x = 35/5

x = 7

d) 15x - 13 = -39 - 11x

15x+11x = - 39 + 13

26x = -26

X = - 26/26

x = -1

b) 7x = 4x + 5

7x - 4x = 5

3x = 5

x = 5/3

e) 21 + 9x = 15x + 33

21 - 33 = 15x - 9x

- 12 = 6x

6x= -12

x = - 12/6

x = - 2

c) 9x - 7 = 5x + 13

9x - 5x = 13+7

4x = 20

x = 20/4

x = 5

f) 16 - 11x + 12 = -15x

15x - 11x = 12-16

4x = - 4

x = - 4/4

x = - 1

Answer 2

Resposta:

Olá,

› a) 5x + 1 = 36

› 36 - 1 = 5x

› 5x = 35

› x = 35/5

› x = 7

› b) 7x = 4x + 5

› 7x - 4x = 5

› 3x = 5

› x = 5/3

› c) 9x - 7 = 5x + 13

› 9x - 5x = 13 + 7

› 4x = 20

› x = 20/4

› x = 5

› d) 15x - 13 = -39 - 11x

› 15x + 11x = -39 + 13

› 26x = -26

› x = -26/26

› x = -1

› e) 21 + 9x = 15x + 33

› 21 - 33 = 15x - 9x

› -12 = 6x

› 6x = -12

› x = -12/6

› x = -2

› f) 16 - 11x + 12 = -15x

› 15x - 11x = 12 - 16

› 4x = -4

› x = -4/4

› x = -1

Dúvidas comente:

Espero ter ajudado!