Subtract 72/21 from 45/10
1st number: 4 5/10, 2nd number: 3 9/21
45/10 - 72/21 is 15/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
45/10 = 45 × 21/10 × 21 = 945/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
72/21 = 72 × 10/21 × 10 = 720/210 - Subtract the two like fractions:
945/210 - 720/210 = 945 - 720/210 = 225/210 - After reducing the fraction, the answer is 15/14
- In mixed form: 11/14
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