Subtract 4/10 from 21/49
21/49 - 4/10 is 1/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 10 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 49 × 10 = 490,
21/49 = 21 × 10/49 × 10 = 210/490 - Likewise, for the 2nd fraction, since 10 × 49 = 490,
4/10 = 4 × 49/10 × 49 = 196/490 - Subtract the two like fractions:
210/490 - 196/490 = 210 - 196/490 = 14/490 - After reducing the fraction, the answer is 1/35
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