Subtract 42/28 from 21/35
1st number: 21/35, 2nd number: 1 14/28
21/35 - 42/28 is -9/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 35 × 4 = 140,
21/35 = 21 × 4/35 × 4 = 84/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
42/28 = 42 × 5/28 × 5 = 210/140 - Subtract the two like fractions:
84/140 - 210/140 = 84 - 210/140 = -126/140 - After reducing the fraction, the answer is -9/10
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