Subtract 28/21 from 35/30
1st number: 1 5/30, 2nd number: 1 7/21
35/30 - 28/21 is -1/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
35/30 = 35 × 7/30 × 7 = 245/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
28/21 = 28 × 10/21 × 10 = 280/210 - Subtract the two like fractions:
245/210 - 280/210 = 245 - 280/210 = -35/210 - After reducing the fraction, the answer is -1/6
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