Subtract 18/72 from 56/49, Solve 1 7/49

Subtract 18/72 from 56/49

1^st number: 1 7/49, 2^nd number: 18/72

56/49 - 18/72 is 25/28.

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

Next, find the equivalent fraction of both fractional numbers with denominator 3528
For the 1st fraction, since 49 × 72 = 3528,
56/49 = 56 × 72/49 × 72 = 4032/3528
Likewise, for the 2nd fraction, since 72 × 49 = 3528,
18/72 = 18 × 49/72 × 49 = 882/3528
Subtract the two like fractions:
4032/3528 - 882/3528 = 4032 - 882/3528 = 3150/3528
After reducing the fraction, the answer is 25/28

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