What is the missing denominator in the addition sentence? 15/28 + 9/?
The missing denominator in the addition sentence is unknown.
wrong
I apologize for the incorrect response. To find the missing denominator in the addition sentence 15/28 + 9/?, we need to determine a common denominator between both fractions. The common denominator is 28 since it is already the denominator for the first fraction. Therefore, the missing denominator in the addition sentence is 28.
To find the missing denominator in the addition sentence 15/28 + 9/?, we need to make the denominators of both fractions the same. To do this, we find the least common multiple (LCM) of 28 and 9, which is 252.
To find the LCM, we can list the multiples of each number and find the smallest number that appears in both lists:
Multiples of 28: 28, 56, 84, 112, 140, 168, 196,...
Multiples of 9: 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108, 117, 126, 135, 144, 153, 162, 171, 180, 189, 198,...
The smallest number that appears in both lists is 252. Therefore, the missing denominator is 252.