Subtract 63/4 from 72/90
1st number: 72/90, 2nd number: 15 3/4
72/90 - 63/4 is -299/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 4 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
72/90 = 72 × 2/90 × 2 = 144/180 - Likewise, for the 2nd fraction, since 4 × 45 = 180,
63/4 = 63 × 45/4 × 45 = 2835/180 - Subtract the two like fractions:
144/180 - 2835/180 = 144 - 2835/180 = -2691/180 - After reducing the fraction, the answer is -299/20
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