Subtract 15/27 from 24/21, Solve 1 3/21

Subtract 15/27 from 24/21

1^st number: 1 3/21, 2^nd number: 15/27

24/21 - 15/27 is 37/63.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 27 is 189

Next, find the equivalent fraction of both fractional numbers with denominator 189
For the 1st fraction, since 21 × 9 = 189,
24/21 = 24 × 9/21 × 9 = 216/189
Likewise, for the 2nd fraction, since 27 × 7 = 189,
15/27 = 15 × 7/27 × 7 = 105/189
Subtract the two like fractions:
216/189 - 105/189 = 216 - 105/189 = 111/189
After reducing the fraction, the answer is 37/63

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