Question

2. Calcule o valor de x.

a) 5x + 5 = 20

b) 2x + 3 = 13

c) 10x + 10 = 40

d) 2x - 3 = 17​

Answer 1

Explicação passo-a-passo:

a) 5x = 20 - 5

5x = 15

x = 15/5

x= 3

b) 2x = 13 -3

2x = 10

x = 10/2

x= 5

c)10x = 40 - 10

10x = 30

x = 30/10

x= 3

d) 2x = 17 +3

2x = 20

x = 20/2

x= 10