Subtract 7/90 from 21/4
1st number: 5 1/4, 2nd number: 7/90
21/4 - 7/90 is 931/180.
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,
21/4 = 21 × 45/4 × 45 = 945/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
7/90 = 7 × 2/90 × 2 = 14/180 - Subtract the two like fractions:
945/180 - 14/180 = 945 - 14/180 = 931/180 - In mixed form: 531/180
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