Subtract 84/7 from 30/42
1st number: 30/42, 2nd number: 12 0/7
30/42 - 84/7 is -79/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
30/42 = 30 × 1/42 × 1 = 30/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
84/7 = 84 × 6/7 × 6 = 504/42 - Subtract the two like fractions:
30/42 - 504/42 = 30 - 504/42 = -474/42 - After reducing the fraction, the answer is -79/7
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