Subtract 12/56 from 15/9, Solve 1 6/9

Subtract 12/56 from 15/9

1^st number: 1 6/9, 2^nd number: 12/56

15/9 - 12/56 is 61/42.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 56 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 9 × 56 = 504,
15/9 = 15 × 56/9 × 56 = 840/504
Likewise, for the 2nd fraction, since 56 × 9 = 504,
12/56 = 12 × 9/56 × 9 = 108/504
Subtract the two like fractions:
840/504 - 108/504 = 840 - 108/504 = 732/504
After reducing the fraction, the answer is 61/42
In mixed form: 119/42

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