Subtract 8/70 from 21/15
1st number: 1 6/15, 2nd number: 8/70
21/15 - 8/70 is 9/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
21/15 = 21 × 14/15 × 14 = 294/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
8/70 = 8 × 3/70 × 3 = 24/210 - Subtract the two like fractions:
294/210 - 24/210 = 294 - 24/210 = 270/210 - After reducing the fraction, the answer is 9/7
- In mixed form: 12/7
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