Subtract 56/45 from 7/28, Solve 7/28

Subtract 56/45 from 7/28

1^st number: 7/28, 2^nd number: 1 11/45

7/28 - 56/45 is -179/180.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 28 × 45 = 1260,
7/28 = 7 × 45/28 × 45 = 315/1260
Likewise, for the 2nd fraction, since 45 × 28 = 1260,
56/45 = 56 × 28/45 × 28 = 1568/1260
Subtract the two like fractions:
315/1260 - 1568/1260 = 315 - 1568/1260 = -1253/1260
After reducing the fraction, the answer is -179/180

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