Subtract 30/7 from 30/36
1st number: 30/36, 2nd number: 4 2/7
30/36 - 30/7 is -145/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 7 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
30/36 = 30 × 7/36 × 7 = 210/252 - Likewise, for the 2nd fraction, since 7 × 36 = 252,
30/7 = 30 × 36/7 × 36 = 1080/252 - Subtract the two like fractions:
210/252 - 1080/252 = 210 - 1080/252 = -870/252 - After reducing the fraction, the answer is -145/42
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