Subtract 28/20 from 45/70
1st number: 45/70, 2nd number: 1 8/20
45/70 - 28/20 is -53/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
45/70 = 45 × 2/70 × 2 = 90/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
28/20 = 28 × 7/20 × 7 = 196/140 - Subtract the two like fractions:
90/140 - 196/140 = 90 - 196/140 = -106/140 - After reducing the fraction, the answer is -53/70
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