Subtract 72/70 from 9/28
1st number: 9/28, 2nd number: 1 2/70
9/28 - 72/70 is -99/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
9/28 = 9 × 5/28 × 5 = 45/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
72/70 = 72 × 2/70 × 2 = 144/140 - Subtract the two like fractions:
45/140 - 144/140 = 45 - 144/140 = -99/140
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