18和42在对模数12同余，因为当18和42被12整除都有6作为余数

18和42在对模数12同余，因为当18和42被12整除都有6作为余数的英文翻译

基本释义

• 18 is congruent to 42 modulo 12 because both 18 and 42 leave 6 as a remainder when divided by 12.