Subtract 70/49 from 20/30
1st number: 20/30, 2nd number: 1 21/49
20/30 - 70/49 is -16/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 49 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 30 × 49 = 1470,
20/30 = 20 × 49/30 × 49 = 980/1470 - Likewise, for the 2nd fraction, since 49 × 30 = 1470,
70/49 = 70 × 30/49 × 30 = 2100/1470 - Subtract the two like fractions:
980/1470 - 2100/1470 = 980 - 2100/1470 = -1120/1470 - After reducing the fraction, the answer is -16/21
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