Respuesta :

Answer:

x = 12.1

Step-by-step explanation:

let the number be 'x'.

Equation:-

1/3(x + 2.6) = 4.9

x + 2.6 = 4.9 x 3

x + 2.6 = 14.7

x = 14.7 - 2.6

x = 12.1