Subtract 3/8 from 45/21
1st number: 2 3/21, 2nd number: 3/8
45/21 - 3/8 is 99/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
45/21 = 45 × 8/21 × 8 = 360/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
3/8 = 3 × 21/8 × 21 = 63/168 - Subtract the two like fractions:
360/168 - 63/168 = 360 - 63/168 = 297/168 - After reducing the fraction, the answer is 99/56
- In mixed form: 143/56
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