Subtract 48/45 from 5/21, Solve 5/21

Subtract 48/45 from 5/21

1^st number: 5/21, 2^nd number: 1 3/45

5/21 - 48/45 is -29/35.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 21 × 15 = 315,
5/21 = 5 × 15/21 × 15 = 75/315
Likewise, for the 2nd fraction, since 45 × 7 = 315,
48/45 = 48 × 7/45 × 7 = 336/315
Subtract the two like fractions:
75/315 - 336/315 = 75 - 336/315 = -261/315
After reducing the fraction, the answer is -29/35

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