Subtract 28/5 from 70/20
1st number: 3 10/20, 2nd number: 5 3/5
70/20 - 28/5 is -21/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
70/20 = 70 × 1/20 × 1 = 70/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
28/5 = 28 × 4/5 × 4 = 112/20 - Subtract the two like fractions:
70/20 - 112/20 = 70 - 112/20 = -42/20 - After reducing the fraction, the answer is -21/10
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