Subtract 8/70 from 21/12
1st number: 1 9/12, 2nd number: 8/70
21/12 - 8/70 is 229/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
21/12 = 21 × 35/12 × 35 = 735/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
8/70 = 8 × 6/70 × 6 = 48/420 - Subtract the two like fractions:
735/420 - 48/420 = 735 - 48/420 = 687/420 - After reducing the fraction, the answer is 229/140
- In mixed form: 189/140
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