Subtract 9/72 from 15/7, Solve 2 1/7

Subtract 9/72 from 15/7

1^st number: 2 1/7, 2^nd number: 9/72

15/7 - 9/72 is 113/56.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 7 × 72 = 504,
15/7 = 15 × 72/7 × 72 = 1080/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
9/72 = 9 × 7/72 × 7 = 63/504
Subtract the two like fractions:
1080/504 - 63/504 = 1080 - 63/504 = 1017/504
After reducing the fraction, the answer is 113/56
In mixed form: 21/56

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