Subtract 28/40 from 72/70
1st number: 1 2/70, 2nd number: 28/40
72/70 - 28/40 is 23/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
72/70 = 72 × 4/70 × 4 = 288/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
28/40 = 28 × 7/40 × 7 = 196/280 - Subtract the two like fractions:
288/280 - 196/280 = 288 - 196/280 = 92/280 - After reducing the fraction, the answer is 23/70
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