Subtract 7/49 from 3/70
3/70 - 7/49 is -1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 49 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 70 × 7 = 490,
3/70 = 3 × 7/70 × 7 = 21/490 - Likewise, for the 2nd fraction, since 49 × 10 = 490,
7/49 = 7 × 10/49 × 10 = 70/490 - Subtract the two like fractions:
21/490 - 70/490 = 21 - 70/490 = -49/490 - After reducing the fraction, the answer is -1/10
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