Subtract 30/80 from 42/12
1st number: 3 6/12, 2nd number: 30/80
42/12 - 30/80 is 25/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 12 × 20 = 240,
42/12 = 42 × 20/12 × 20 = 840/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
30/80 = 30 × 3/80 × 3 = 90/240 - Subtract the two like fractions:
840/240 - 90/240 = 840 - 90/240 = 750/240 - After reducing the fraction, the answer is 25/8
- In mixed form: 31/8
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