Subtract 15/30 from 64/21
1st number: 3 1/21, 2nd number: 15/30
64/21 - 15/30 is 107/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
64/21 = 64 × 10/21 × 10 = 640/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
15/30 = 15 × 7/30 × 7 = 105/210 - Subtract the two like fractions:
640/210 - 105/210 = 640 - 105/210 = 535/210 - After reducing the fraction, the answer is 107/42
- In mixed form: 223/42
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