To solve the inequality \( 5 + c \leq 10 \), you need to isolate \( c \).
- Subtract 5 from both sides of the inequality:
\[ 5 + c - 5 \leq 10 - 5 \]
This simplifies to:
\[ c \leq 5 \]
So, the solution is \( c \leq 5 \). This means \( c \) can be any number less than or equal to 5.