Subtract 20/42 from 49/30
1st number: 1 19/30, 2nd number: 20/42
49/30 - 20/42 is 81/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
49/30 = 49 × 7/30 × 7 = 343/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
20/42 = 20 × 5/42 × 5 = 100/210 - Subtract the two like fractions:
343/210 - 100/210 = 343 - 100/210 = 243/210 - After reducing the fraction, the answer is 81/70
- In mixed form: 111/70
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