Subtract 72/18 from 63/45
1st number: 1 18/45, 2nd number: 4 0/18
63/45 - 72/18 is -13/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
63/45 = 63 × 2/45 × 2 = 126/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
72/18 = 72 × 5/18 × 5 = 360/90 - Subtract the two like fractions:
126/90 - 360/90 = 126 - 360/90 = -234/90 - After reducing the fraction, the answer is -13/5
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