Subtract 45/84 from 50/21
1st number: 2 8/21, 2nd number: 45/84
50/21 - 45/84 is 155/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
50/21 = 50 × 4/21 × 4 = 200/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
45/84 = 45 × 1/84 × 1 = 45/84 - Subtract the two like fractions:
200/84 - 45/84 = 200 - 45/84 = 155/84 - In mixed form: 171/84
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