Subtract 28/10 from 42/49
1st number: 42/49, 2nd number: 2 8/10
42/49 - 28/10 is -68/35.
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,
42/49 = 42 × 10/49 × 10 = 420/490 - Likewise, for the 2nd fraction, since 10 × 49 = 490,
28/10 = 28 × 49/10 × 49 = 1372/490 - Subtract the two like fractions:
420/490 - 1372/490 = 420 - 1372/490 = -952/490 - After reducing the fraction, the answer is -68/35
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