Subtract 30/7 from 60/18
1st number: 3 6/18, 2nd number: 4 2/7
60/18 - 30/7 is -20/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
60/18 = 60 × 7/18 × 7 = 420/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
30/7 = 30 × 18/7 × 18 = 540/126 - Subtract the two like fractions:
420/126 - 540/126 = 420 - 540/126 = -120/126 - After reducing the fraction, the answer is -20/21
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