Subtract 3/30 from 21/14
1st number: 1 7/14, 2nd number: 3/30
21/14 - 3/30 is 7/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 14 × 15 = 210,
21/14 = 21 × 15/14 × 15 = 315/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
3/30 = 3 × 7/30 × 7 = 21/210 - Subtract the two like fractions:
315/210 - 21/210 = 315 - 21/210 = 294/210 - After reducing the fraction, the answer is 7/5
- In mixed form: 12/5
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