Subtract 90/48 from 90/75, Solve 1 15/75

Subtract 90/48 from 90/75

1^st number: 1 15/75, 2^nd number: 1 42/48

90/75 - 90/48 is -27/40.

Find the least common denominator or LCM of the two denominators:
LCM of 75 and 48 is 1200

Next, find the equivalent fraction of both fractional numbers with denominator 1200
For the 1st fraction, since 75 × 16 = 1200,
90/75 = 90 × 16/75 × 16 = 1440/1200
Likewise, for the 2nd fraction, since 48 × 25 = 1200,
90/48 = 90 × 25/48 × 25 = 2250/1200
Subtract the two like fractions:
1440/1200 - 2250/1200 = 1440 - 2250/1200 = -810/1200
After reducing the fraction, the answer is -27/40

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