I am doing a Chinese remainder theorem question and one of the equations is [itex]x \equiv 0[/itex] (mod 7). This would mean that x is a multiple of 7, but how do I use it in conjunction with the Chinese remainder theorem? Do I just ignore that equation, use the CRT on the rest of the system, and then once I get an answer, make sure it is also a multiple of 7? (this is my guess, but I am not 100% sure). Thanks!