Respuesta :

mreijepatmat
 0.81x - 0.45 is subtracted from 3.28x + 1.4

3.28x + 1.4 - (0.81x - 0.45) = 3.28x + 14 - 0.81x + 0.45

= (3.28x - 0.81x) + ( 14 +0.45)

= 4.09x + 14.45