Subtract 2/15 from 30/70
30/70 - 2/15 is 31/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
30/70 = 30 × 3/70 × 3 = 90/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
2/15 = 2 × 14/15 × 14 = 28/210 - Subtract the two like fractions:
90/210 - 28/210 = 90 - 28/210 = 62/210 - After reducing the fraction, the answer is 31/105
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