Subtract 90/98 from 16/40
16/40 - 90/98 is -127/245.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 98 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 40 × 49 = 1960,
16/40 = 16 × 49/40 × 49 = 784/1960 - Likewise, for the 2nd fraction, since 98 × 20 = 1960,
90/98 = 90 × 20/98 × 20 = 1800/1960 - Subtract the two like fractions:
784/1960 - 1800/1960 = 784 - 1800/1960 = -1016/1960 - After reducing the fraction, the answer is -127/245
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