Subtract 20/6 from 30/70
1st number: 30/70, 2nd number: 3 2/6
30/70 - 20/6 is -61/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 6 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 6 × 35 = 210,
20/6 = 20 × 35/6 × 35 = 700/210 - Subtract the two like fractions:
90/210 - 700/210 = 90 - 700/210 = -610/210 - After reducing the fraction, the answer is -61/21
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