Subtract 21/7 from 84/70
1st number: 1 14/70, 2nd number: 3 0/7
84/70 - 21/7 is -9/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
84/70 = 84 × 1/70 × 1 = 84/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
21/7 = 21 × 10/7 × 10 = 210/70 - Subtract the two like fractions:
84/70 - 210/70 = 84 - 210/70 = -126/70 - After reducing the fraction, the answer is -9/5
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