Respuesta :

Answer:

The first step is subtracting 6.4 on both sides.

Step-by-step explanation:

The first step is subtracting 6.4 on both sides.

3.5n + 6.4=42.5

3.5n = 36.1

n = 10.31 rounded.

subtract 6.4 from 42.5 (which equals to 36.1)