Subtract 15/70 from 80/20
1st number: 4 0/20, 2nd number: 15/70
80/20 - 15/70 is 53/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
80/20 = 80 × 7/20 × 7 = 560/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
15/70 = 15 × 2/70 × 2 = 30/140 - Subtract the two like fractions:
560/140 - 30/140 = 560 - 30/140 = 530/140 - After reducing the fraction, the answer is 53/14
- In mixed form: 311/14
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