Subtract 9/40 from 70/20
1st number: 3 10/20, 2nd number: 9/40
70/20 - 9/40 is 131/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
70/20 = 70 × 2/20 × 2 = 140/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
9/40 = 9 × 1/40 × 1 = 9/40 - Subtract the two like fractions:
140/40 - 9/40 = 140 - 9/40 = 131/40 - In mixed form: 311/40
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