Question

poderia realizar esses exercícios​

Answer 1

Resposta:

Explicação passo-a-passo:

a)

x + 5 = 15

x = 15 - 5

x = 10

b)

5x = - 15

x = - 15 / 5

x = - 3

c)

x - 5 = - 15

x = - 15 + 5

x = - 10

d)

x / 5 = 15

x = 5 . 15

x = 75

e)

3a = 6

a = 6 / 3

a = 2

f)

b + 18 = - 2

b = - 2 - 18

b = - 20

g)

a / 2 = - 1

a = 2 . ( - 1 )

a = - 2

h)

k - 18 = 2

k = 2 + 18

k = 20

Answer 2

a) x + 5 = 15

x = 15 - 5

x = 10

b) 5x = -15

x = (-15 : 5)/(5 : 5)

x = -3/1

x = -3

c) x - 5 = -15

x = -15 + 5

x = -10

d) x/5 = 15

x = 15 . 5

x = 75

e) 3a = 6

a = 6/3

a = 2

f) b + 18 = -2

b = -2 - 18

b = -20

g) a/2 = -1

a = 2 . (-1)

a = -2

h) k - 18 = 2

k = 2 + 18

k = 20