Subtract 21/16 from 90/20
1st number: 4 10/20, 2nd number: 1 5/16
90/20 - 21/16 is 51/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
90/20 = 90 × 4/20 × 4 = 360/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
21/16 = 21 × 5/16 × 5 = 105/80 - Subtract the two like fractions:
360/80 - 105/80 = 360 - 105/80 = 255/80 - After reducing the fraction, the answer is 51/16
- In mixed form: 33/16
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