Subtract 42/70 from 20/10
1st number: 2 0/10, 2nd number: 42/70
20/10 - 42/70 is 7/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
20/10 = 20 × 7/10 × 7 = 140/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
42/70 = 42 × 1/70 × 1 = 42/70 - Subtract the two like fractions:
140/70 - 42/70 = 140 - 42/70 = 98/70 - After reducing the fraction, the answer is 7/5
- In mixed form: 12/5
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