Subtract 30/81 from 42/7
1st number: 6 0/7, 2nd number: 30/81
42/7 - 30/81 is 152/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 7 × 81 = 567,
42/7 = 42 × 81/7 × 81 = 3402/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
30/81 = 30 × 7/81 × 7 = 210/567 - Subtract the two like fractions:
3402/567 - 210/567 = 3402 - 210/567 = 3192/567 - After reducing the fraction, the answer is 152/27
- In mixed form: 517/27
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