Subtract 42/40 from 90/6
1st number: 15 0/6, 2nd number: 1 2/40
90/6 - 42/40 is 279/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 6 × 20 = 120,
90/6 = 90 × 20/6 × 20 = 1800/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
42/40 = 42 × 3/40 × 3 = 126/120 - Subtract the two like fractions:
1800/120 - 126/120 = 1800 - 126/120 = 1674/120 - After reducing the fraction, the answer is 279/20
- In mixed form: 1319/20
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