Subtract 21/70 from 42/98
42/98 - 21/70 is 9/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 70 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 98 × 5 = 490,
42/98 = 42 × 5/98 × 5 = 210/490 - Likewise, for the 2nd fraction, since 70 × 7 = 490,
21/70 = 21 × 7/70 × 7 = 147/490 - Subtract the two like fractions:
210/490 - 147/490 = 210 - 147/490 = 63/490 - After reducing the fraction, the answer is 9/70
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