Subtract 12/60 from 30/8, Solve 3 6/8

Subtract 12/60 from 30/8

1^st number: 3 6/8, 2^nd number: 12/60

30/8 - 12/60 is 71/20.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 60 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 8 × 15 = 120,
30/8 = 30 × 15/8 × 15 = 450/120
Likewise, for the 2nd fraction, since 60 × 2 = 120,
12/60 = 12 × 2/60 × 2 = 24/120
Subtract the two like fractions:
450/120 - 24/120 = 450 - 24/120 = 426/120
After reducing the fraction, the answer is 71/20
In mixed form: 311/20

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