Subtract 30/40 from 28/98
28/98 - 30/40 is -13/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 40 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 98 × 20 = 1960,
28/98 = 28 × 20/98 × 20 = 560/1960 - Likewise, for the 2nd fraction, since 40 × 49 = 1960,
30/40 = 30 × 49/40 × 49 = 1470/1960 - Subtract the two like fractions:
560/1960 - 1470/1960 = 560 - 1470/1960 = -910/1960 - After reducing the fraction, the answer is -13/28
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