What is the multiplicative inverse of 7?
3 answer(s)
Answer # 1 #
If you’re thinking in modular arithmetic (like in competitive exams), then the inverse depends on the modulus. But in general arithmetic, it’s just 1/7.
Answer # 2 #
The multiplicative inverse of 7 is 1/7 (one-seventh). In mathematics, the multiplicative inverse of any number is what you multiply that number by to get 1. So 7 × (1/7) = 1. It's also called the reciprocal. For whole numbers, you just put 1 over the number. This concept is super important in algebra when you need to solve equations or divide fractions. Pretty straightforward once you get the hang of it!