Subtract 80/28 from 30/45, Solve 30/45

Subtract 80/28 from 30/45

1^st number: 30/45, 2^nd number: 2 24/28

30/45 - 80/28 is -46/21.

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

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 45 × 28 = 1260,
30/45 = 30 × 28/45 × 28 = 840/1260
Likewise, for the 2nd fraction, since 28 × 45 = 1260,
80/28 = 80 × 45/28 × 45 = 3600/1260
Subtract the two like fractions:
840/1260 - 3600/1260 = 840 - 3600/1260 = -2760/1260
After reducing the fraction, the answer is -46/21

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