Subtract 30/15 from 3/8, Solve 3/8 - 2 0/15 as a fraction

Subtract 30/15 from 3/8

1^st number: 3/8, 2^nd number: 2 0/15

3/8 - 30/15 is -13/8.

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,
3/8 = 3 × 15/8 × 15 = 45/120
Likewise, for the 2nd fraction, since 15 × 8 = 120,
30/15 = 30 × 8/15 × 8 = 240/120
Subtract the two like fractions:
45/120 - 240/120 = 45 - 240/120 = -195/120
After reducing the fraction, the answer is -13/8

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