Respuesta :

Answer:

0.76x - 0.28

Step-by-step explanation:

m= 0.56x-0.25

n= 0.20x-0.03

m+n= 0.56x-0.25 + 0.20x-0.03 = (0.56+0.20)x - (0.25+0.03)= 0.76x - 0.28