Subtract 90/20 from 70/49
1st number: 1 21/49, 2nd number: 4 10/20
70/49 - 90/20 is -43/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 20 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 49 × 20 = 980,
70/49 = 70 × 20/49 × 20 = 1400/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
90/20 = 90 × 49/20 × 49 = 4410/980 - Subtract the two like fractions:
1400/980 - 4410/980 = 1400 - 4410/980 = -3010/980 - After reducing the fraction, the answer is -43/14
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