Subtract 10/70 from 72/20
1st number: 3 12/20, 2nd number: 10/70
72/20 - 10/70 is 121/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
72/20 = 72 × 7/20 × 7 = 504/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
10/70 = 10 × 2/70 × 2 = 20/140 - Subtract the two like fractions:
504/140 - 20/140 = 504 - 20/140 = 484/140 - After reducing the fraction, the answer is 121/35
- In mixed form: 316/35
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