Subtract 72/70 from 45/40
1st number: 1 5/40, 2nd number: 1 2/70
45/40 - 72/70 is 27/280.
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,
45/40 = 45 × 7/40 × 7 = 315/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
72/70 = 72 × 4/70 × 4 = 288/280 - Subtract the two like fractions:
315/280 - 288/280 = 315 - 288/280 = 27/280
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