Respuesta :

Cherry084

Answer:

a) 3

b) 12

c) 4

Step-by-step explanation:

a)

17 - 4x = 8 - x

9 = 3x

x = 3

b)

3x ÷ 4 = 9

3x = 36

x = 12

c)

5x + 6 × (x + 2) = 56

5x + 6x + 12 = 56

11x = 44

x = 4