4+c<18, you can find this by underlining certain parts out of the problem: the sum of 4 and c is less than 18.
less than is <
sum is what is equal to using addition.
Hope this helps, now you know the answer and how to do it. HAVE A BLESSED AND WONDERFUL DAY! As well as a great Valentines Day! :-)
- Cutiepatutie ☺❀❤