Subtract 70/21 from 84/35
1st number: 2 14/35, 2nd number: 3 7/21
84/35 - 70/21 is -14/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 35 × 3 = 105,
84/35 = 84 × 3/35 × 3 = 252/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
70/21 = 70 × 5/21 × 5 = 350/105 - Subtract the two like fractions:
252/105 - 350/105 = 252 - 350/105 = -98/105 - After reducing the fraction, the answer is -14/15
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