Subtract 70/84 from 49/21
1st number: 2 7/21, 2nd number: 70/84
49/21 - 70/84 is 3/2.
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,
49/21 = 49 × 4/21 × 4 = 196/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
70/84 = 70 × 1/84 × 1 = 70/84 - Subtract the two like fractions:
196/84 - 70/84 = 196 - 70/84 = 126/84 - After reducing the fraction, the answer is 3/2
- In mixed form: 11/2
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