Question

a) 5.x = 10

 b) 3.x = -15

C) -10.x = -50

D) 2.x + 10 = 30

 e) 4.x - 20 = - 60

f) 8 + 3.x = 32

 g) 5.x + 15 = 2.x + 30

 h) 4 + 2.x = - 8.x + 24

   me ajude a responde por favor ​

Answer 1

Resposta:

a)

$5x = 10 \\ x = \frac{10}{5} \\ x = 2$

b)

$3x = - 15 \\ x = \frac{ - 15}{3} \\ x = - 5$

c)

$- 10x = - 50 \\ x = \frac{ - 50}{ - 10} \\ x = 5$

d)

$2x + 10 = 30 \\ 2x = 30 - 10 \\ 2x = 20 \\ x = \frac{20}{2} \\ x = 10$

e)

$4x - 20 = - 60 \\ 4x = - 60 + 20 \\ 4x = - 40 \\ x = \frac{ - 40}{4} \\ x = - 10$

f)

$8 + 3x = 32 \\ 3x = 32 - 8 \\ 3x = 24 \\ x = \frac{24}{3} \\ x = 8$

g)

$5x + 15 = 2x + 30 \\ 5x - 2x = 30 - 15 \\ 3x = 15 \\ x = \frac{15}{3} \\ x = 5$

h)

$4 + 2x = - 8x + 24 \\ 2x + 8x = 24 - 4 \\ 10x = 20 \\ x = \frac{20}{10} \\ x = 2$