Subtract 90/15 from 45/8, Solve 5 5/8

Subtract 90/15 from 45/8

1^st number: 5 5/8, 2^nd number: 6 0/15

45/8 - 90/15 is -3/8.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 15 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 8 × 15 = 120,
45/8 = 45 × 15/8 × 15 = 675/120
Likewise, for the 2nd fraction, since 15 × 8 = 120,
90/15 = 90 × 8/15 × 8 = 720/120
Subtract the two like fractions:
675/120 - 720/120 = 675 - 720/120 = -45/120
After reducing the fraction, the answer is -3/8

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