Subtract 42/10 from 84/28
1st number: 3 0/28, 2nd number: 4 2/10
84/28 - 42/10 is -6/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 10 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
84/28 = 84 × 5/28 × 5 = 420/140 - Likewise, for the 2nd fraction, since 10 × 14 = 140,
42/10 = 42 × 14/10 × 14 = 588/140 - Subtract the two like fractions:
420/140 - 588/140 = 420 - 588/140 = -168/140 - After reducing the fraction, the answer is -6/5
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