Subtract 7/45 from 21/3
1st number: 7 0/3, 2nd number: 7/45
21/3 - 7/45 is 308/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 3 × 15 = 45,
21/3 = 21 × 15/3 × 15 = 315/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
7/45 = 7 × 1/45 × 1 = 7/45 - Subtract the two like fractions:
315/45 - 7/45 = 315 - 7/45 = 308/45 - In mixed form: 638/45
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