Subtract 20/6 from 45/63
1st number: 45/63, 2nd number: 3 2/6
45/63 - 20/6 is -55/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 6 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
45/63 = 45 × 2/63 × 2 = 90/126 - Likewise, for the 2nd fraction, since 6 × 21 = 126,
20/6 = 20 × 21/6 × 21 = 420/126 - Subtract the two like fractions:
90/126 - 420/126 = 90 - 420/126 = -330/126 - After reducing the fraction, the answer is -55/21
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