To solve for \( n \) in the equation \( 5.6(n + 1.42) = 7.8 \), the first step would be to divide both sides by 5.6 to isolate the expression involving \( n \).
So, the second step would be to subtract 1.42 from both sides after that initial division.
Thus, the correct answer is:
Subtract 1.42 from both sides.