Subtract 80/45 from 7/20
1st number: 7/20, 2nd number: 1 35/45
7/20 - 80/45 is -257/180.
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,
7/20 = 7 × 9/20 × 9 = 63/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
80/45 = 80 × 4/45 × 4 = 320/180 - Subtract the two like fractions:
63/180 - 320/180 = 63 - 320/180 = -257/180
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