Subtract 35/21 from 20/48, Solve 20/48

Subtract 35/21 from 20/48

1^st number: 20/48, 2^nd number: 1 14/21

20/48 - 35/21 is -5/4.

Find the least common denominator or LCM of the two denominators:
LCM of 48 and 21 is 336

Next, find the equivalent fraction of both fractional numbers with denominator 336
For the 1st fraction, since 48 × 7 = 336,
20/48 = 20 × 7/48 × 7 = 140/336
Likewise, for the 2nd fraction, since 21 × 16 = 336,
35/21 = 35 × 16/21 × 16 = 560/336
Subtract the two like fractions:
140/336 - 560/336 = 140 - 560/336 = -420/336
After reducing the fraction, the answer is -5/4

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