Subtract 49/21 from 49/18, Solve 2 13/18

Subtract 49/21 from 49/18

1^st number: 2 13/18, 2^nd number: 2 7/21

49/18 - 49/21 is 7/18.

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

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
49/18 = 49 × 7/18 × 7 = 343/126
Likewise, for the 2nd fraction, since 21 × 6 = 126,
49/21 = 49 × 6/21 × 6 = 294/126
Subtract the two like fractions:
343/126 - 294/126 = 343 - 294/126 = 49/126
After reducing the fraction, the answer is 7/18

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