Subtract 70/45 from 30/20
1st number: 1 10/20, 2nd number: 1 25/45
30/20 - 70/45 is -1/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
30/20 = 30 × 9/20 × 9 = 270/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
70/45 = 70 × 4/45 × 4 = 280/180 - Subtract the two like fractions:
270/180 - 280/180 = 270 - 280/180 = -10/180 - After reducing the fraction, the answer is -1/18
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