Subtract 15/80 from 63/42
1st number: 1 21/42, 2nd number: 15/80
63/42 - 15/80 is 21/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 42 × 40 = 1680,
63/42 = 63 × 40/42 × 40 = 2520/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
15/80 = 15 × 21/80 × 21 = 315/1680 - Subtract the two like fractions:
2520/1680 - 315/1680 = 2520 - 315/1680 = 2205/1680 - After reducing the fraction, the answer is 21/16
- In mixed form: 15/16
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