Subtract 27/30 from 42/98
42/98 - 27/30 is -33/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 30 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 98 × 15 = 1470,
42/98 = 42 × 15/98 × 15 = 630/1470 - Likewise, for the 2nd fraction, since 30 × 49 = 1470,
27/30 = 27 × 49/30 × 49 = 1323/1470 - Subtract the two like fractions:
630/1470 - 1323/1470 = 630 - 1323/1470 = -693/1470 - After reducing the fraction, the answer is -33/70
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