so as 22/7 is already a fraction we can write pi which is 3.14 to the same base as well! so right now pi is 3.14/1 that's just 3.14. we can multiply that 3.14 by 7 so the denominator will be 7 like the other number which helps us compare. so 3.14*7 is 21.98 now that number is over 7 compare: 21.98/7 and 22/7 now we can see pi which is 3.14 is smaller and closer to pi