Subtract 30/45 from 3/28, Solve 3/28

Subtract 30/45 from 3/28

3/28 - 30/45 is -47/84.

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,
3/28 = 3 × 45/28 × 45 = 135/1260
Likewise, for the 2nd fraction, since 45 × 28 = 1260,
30/45 = 30 × 28/45 × 28 = 840/1260
Subtract the two like fractions:
135/1260 - 840/1260 = 135 - 840/1260 = -705/1260
After reducing the fraction, the answer is -47/84

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