Subtract 45/56 from 27/15, Solve 1 12/15

Subtract 45/56 from 27/15

1^st number: 1 12/15, 2^nd number: 45/56

27/15 - 45/56 is 279/280.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 56 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 15 × 56 = 840,
27/15 = 27 × 56/15 × 56 = 1512/840
Likewise, for the 2nd fraction, since 56 × 15 = 840,
45/56 = 45 × 15/56 × 15 = 675/840
Subtract the two like fractions:
1512/840 - 675/840 = 1512 - 675/840 = 837/840
After reducing the fraction, the answer is 279/280

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