Subtract 42/80 from 90/4
1st number: 22 2/4, 2nd number: 42/80
90/4 - 42/80 is 879/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 4 × 20 = 80,
90/4 = 90 × 20/4 × 20 = 1800/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
42/80 = 42 × 1/80 × 1 = 42/80 - Subtract the two like fractions:
1800/80 - 42/80 = 1800 - 42/80 = 1758/80 - After reducing the fraction, the answer is 879/40
- In mixed form: 2139/40
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