Subtract 45/30 from 20/72
1st number: 20/72, 2nd number: 1 15/30
20/72 - 45/30 is -11/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 30 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
20/72 = 20 × 5/72 × 5 = 100/360 - Likewise, for the 2nd fraction, since 30 × 12 = 360,
45/30 = 45 × 12/30 × 12 = 540/360 - Subtract the two like fractions:
100/360 - 540/360 = 100 - 540/360 = -440/360 - After reducing the fraction, the answer is -11/9
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