Subtract 90/80 from 21/5
1st number: 4 1/5, 2nd number: 1 10/80
21/5 - 90/80 is 123/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 5 × 16 = 80,
21/5 = 21 × 16/5 × 16 = 336/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
90/80 = 90 × 1/80 × 1 = 90/80 - Subtract the two like fractions:
336/80 - 90/80 = 336 - 90/80 = 246/80 - After reducing the fraction, the answer is 123/40
- In mixed form: 33/40
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