Subtract 80/20 from 8/45
1st number: 8/45, 2nd number: 4 0/20
8/45 - 80/20 is -172/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
8/45 = 8 × 4/45 × 4 = 32/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
80/20 = 80 × 9/20 × 9 = 720/180 - Subtract the two like fractions:
32/180 - 720/180 = 32 - 720/180 = -688/180 - After reducing the fraction, the answer is -172/45
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