Subtract 42/7 from 28/10
1st number: 2 8/10, 2nd number: 6 0/7
28/10 - 42/7 is -16/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
28/10 = 28 × 7/10 × 7 = 196/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
42/7 = 42 × 10/7 × 10 = 420/70 - Subtract the two like fractions:
196/70 - 420/70 = 196 - 420/70 = -224/70 - After reducing the fraction, the answer is -16/5
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