Subtract 21/84 from 70/45
1st number: 1 25/45, 2nd number: 21/84
70/45 - 21/84 is 47/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
70/45 = 70 × 28/45 × 28 = 1960/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
21/84 = 21 × 15/84 × 15 = 315/1260 - Subtract the two like fractions:
1960/1260 - 315/1260 = 1960 - 315/1260 = 1645/1260 - After reducing the fraction, the answer is 47/36
- In mixed form: 111/36
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