Subtract 10/18 from 24/21, Solve 1 3/21

Subtract 10/18 from 24/21

1^st number: 1 3/21, 2^nd number: 10/18

24/21 - 10/18 is 37/63.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 21 × 6 = 126,
24/21 = 24 × 6/21 × 6 = 144/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
10/18 = 10 × 7/18 × 7 = 70/126
Subtract the two like fractions:
144/126 - 70/126 = 144 - 70/126 = 74/126
After reducing the fraction, the answer is 37/63

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