Subtract 42/80 from 30/8
1st number: 3 6/8, 2nd number: 42/80
30/8 - 42/80 is 129/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 8 × 10 = 80,
30/8 = 30 × 10/8 × 10 = 300/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
42/80 = 42 × 1/80 × 1 = 42/80 - Subtract the two like fractions:
300/80 - 42/80 = 300 - 42/80 = 258/80 - After reducing the fraction, the answer is 129/40
- In mixed form: 39/40
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