Subtract 15/63 from 80/20
1st number: 4 0/20, 2nd number: 15/63
80/20 - 15/63 is 79/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 63 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 20 × 63 = 1260,
80/20 = 80 × 63/20 × 63 = 5040/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
15/63 = 15 × 20/63 × 20 = 300/1260 - Subtract the two like fractions:
5040/1260 - 300/1260 = 5040 - 300/1260 = 4740/1260 - After reducing the fraction, the answer is 79/21
- In mixed form: 316/21
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