Subtract 15/70 from 80/40
1st number: 2 0/40, 2nd number: 15/70
80/40 - 15/70 is 25/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
80/40 = 80 × 7/40 × 7 = 560/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
15/70 = 15 × 4/70 × 4 = 60/280 - Subtract the two like fractions:
560/280 - 60/280 = 560 - 60/280 = 500/280 - After reducing the fraction, the answer is 25/14
- In mixed form: 111/14
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