Subtract 56/49 from 30/72, Solve 30/72

Subtract 56/49 from 30/72

1^st number: 30/72, 2^nd number: 1 7/49

30/72 - 56/49 is -61/84.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 49 is 3528

Next, find the equivalent fraction of both fractional numbers with denominator 3528
For the 1st fraction, since 72 × 49 = 3528,
30/72 = 30 × 49/72 × 49 = 1470/3528
Likewise, for the 2nd fraction, since 49 × 72 = 3528,
56/49 = 56 × 72/49 × 72 = 4032/3528
Subtract the two like fractions:
1470/3528 - 4032/3528 = 1470 - 4032/3528 = -2562/3528
After reducing the fraction, the answer is -61/84

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