Subtract 45/90 from 3/28, Solve 3/28

Subtract 45/90 from 3/28

3/28 - 45/90 is -11/28.

Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 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 90 × 14 = 1260,
45/90 = 45 × 14/90 × 14 = 630/1260
Subtract the two like fractions:
135/1260 - 630/1260 = 135 - 630/1260 = -495/1260
After reducing the fraction, the answer is -11/28

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