Question

07. Calcule o valor de x:
a) 2x + 13 = 31
b) 5x - 18 = 22
c) 2x + 17 = 35​

Answer 1

Resposta:

a) x = 9

b) x = 8

c) x = 9

Explicação passo-a-passo:

a) 2x + 13 = 31

2x = 31 - 13

2x = 18

x = 18 / 2

x = 9

b) 5x - 18 = 22

5x = 22 + 18

5x = 40

x = 40 / 5

x = 8

c) 2x + 17 = 35​

2x = 35 - 17

2x = 18

x = 18/2

x = 9