Subtract 90/28 from 5/45, Solve 5/45

Subtract 90/28 from 5/45

1^st number: 5/45, 2^nd number: 3 6/28

5/45 - 90/28 is -391/126.

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,
5/45 = 5 × 28/45 × 28 = 140/1260
Likewise, for the 2nd fraction, since 28 × 45 = 1260,
90/28 = 90 × 45/28 × 45 = 4050/1260
Subtract the two like fractions:
140/1260 - 4050/1260 = 140 - 4050/1260 = -3910/1260
After reducing the fraction, the answer is -391/126

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