Subtract 90/48 from 3/45, Solve 3/45

Subtract 90/48 from 3/45

1^st number: 3/45, 2^nd number: 1 42/48

3/45 - 90/48 is -217/120.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 48 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 45 × 16 = 720,
3/45 = 3 × 16/45 × 16 = 48/720
Likewise, for the 2nd fraction, since 48 × 15 = 720,
90/48 = 90 × 15/48 × 15 = 1350/720
Subtract the two like fractions:
48/720 - 1350/720 = 48 - 1350/720 = -1302/720
After reducing the fraction, the answer is -217/120

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