Subtract 21/30 from 84/7
1st number: 12 0/7, 2nd number: 21/30
84/7 - 21/30 is 113/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 7 × 30 = 210,
84/7 = 84 × 30/7 × 30 = 2520/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
21/30 = 21 × 7/30 × 7 = 147/210 - Subtract the two like fractions:
2520/210 - 147/210 = 2520 - 147/210 = 2373/210 - After reducing the fraction, the answer is 113/10
- In mixed form: 113/10
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