Subtract 1/70 from 15/21
15/21 - 1/70 is 7/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
15/21 = 15 × 10/21 × 10 = 150/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
1/70 = 1 × 3/70 × 3 = 3/210 - Subtract the two like fractions:
150/210 - 3/210 = 150 - 3/210 = 147/210 - After reducing the fraction, the answer is 7/10
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