Subtract 27/49 from 42/15, Solve 2 12/15

Subtract 27/49 from 42/15

1^st number: 2 12/15, 2^nd number: 27/49

42/15 - 27/49 is 551/245.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 49 is 735

Next, find the equivalent fraction of both fractional numbers with denominator 735
For the 1st fraction, since 15 × 49 = 735,
42/15 = 42 × 49/15 × 49 = 2058/735
Likewise, for the 2nd fraction, since 49 × 15 = 735,
27/49 = 27 × 15/49 × 15 = 405/735
Subtract the two like fractions:
2058/735 - 405/735 = 2058 - 405/735 = 1653/735
After reducing the fraction, the answer is 551/245
In mixed form: 261/245

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