Subtract 72/90 from 7/4
1st number: 1 3/4, 2nd number: 72/90
7/4 - 72/90 is 19/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
7/4 = 7 × 45/4 × 45 = 315/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
72/90 = 72 × 2/90 × 2 = 144/180 - Subtract the two like fractions:
315/180 - 144/180 = 315 - 144/180 = 171/180 - After reducing the fraction, the answer is 19/20
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