Question

6) Qual o valor de x?
a) 2x + 10 = 0
b) 3x - 21 = 0
c) x + 38 = 0
d) 2x + 14 = 28 + x
e) 5 + x = 30

Answer 1

Oie, tudo bom?

a)

2x + 10 = 0

2x = - 10

x = - 10/2

x = - 5

b)

3x - 21 = 0

3x = 21

x = 21/3

x = 7

c)

x + 38 = 0

x = - 38

d)

2x + 14 = 28 + x

2x - x = 28 - 14

x = 14

e)

5 + x = 30

x = 30 - 5

x = 15

Att. NLE Top Shotta