Subtract 21/7 from 1/48, Solve 1/48

Subtract 21/7 from 1/48

1^st number: 1/48, 2^nd number: 3 0/7

1/48 - 21/7 is -143/48.

Find the least common denominator or LCM of the two denominators:
LCM of 48 and 7 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 48 × 7 = 336,
1/48 = 1 × 7/48 × 7 = 7/336
Likewise, for the 2nd fraction, since 7 × 48 = 336,
21/7 = 21 × 48/7 × 48 = 1008/336
Subtract the two like fractions:
7/336 - 1008/336 = 7 - 1008/336 = -1001/336
After reducing the fraction, the answer is -143/48

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