Subtract 21/3 from 10/70
1st number: 10/70, 2nd number: 7 0/3
10/70 - 21/3 is -48/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 3 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
10/70 = 10 × 3/70 × 3 = 30/210 - Likewise, for the 2nd fraction, since 3 × 70 = 210,
21/3 = 21 × 70/3 × 70 = 1470/210 - Subtract the two like fractions:
30/210 - 1470/210 = 30 - 1470/210 = -1440/210 - After reducing the fraction, the answer is -48/7
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