Subtract 3/18 from 50/21, Solve 2 8/21

Subtract 3/18 from 50/21

1^st number: 2 8/21, 2^nd number: 3/18

50/21 - 3/18 is 31/14.

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,
50/21 = 50 × 6/21 × 6 = 300/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
3/18 = 3 × 7/18 × 7 = 21/126
Subtract the two like fractions:
300/126 - 21/126 = 300 - 21/126 = 279/126
After reducing the fraction, the answer is 31/14
In mixed form: 23/14

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