Subtract 42/20 from 70/15
1st number: 4 10/15, 2nd number: 2 2/20
70/15 - 42/20 is 77/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
70/15 = 70 × 4/15 × 4 = 280/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
42/20 = 42 × 3/20 × 3 = 126/60 - Subtract the two like fractions:
280/60 - 126/60 = 280 - 126/60 = 154/60 - After reducing the fraction, the answer is 77/30
- In mixed form: 217/30
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