Subtract 15/72 from 70/20
1st number: 3 10/20, 2nd number: 15/72
70/20 - 15/72 is 79/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
70/20 = 70 × 18/20 × 18 = 1260/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
15/72 = 15 × 5/72 × 5 = 75/360 - Subtract the two like fractions:
1260/360 - 75/360 = 1260 - 75/360 = 1185/360 - After reducing the fraction, the answer is 79/24
- In mixed form: 37/24
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