Subtract 42/6 from 90/40
1st number: 2 10/40, 2nd number: 7 0/6
90/40 - 42/6 is -19/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 6 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
90/40 = 90 × 3/40 × 3 = 270/120 - Likewise, for the 2nd fraction, since 6 × 20 = 120,
42/6 = 42 × 20/6 × 20 = 840/120 - Subtract the two like fractions:
270/120 - 840/120 = 270 - 840/120 = -570/120 - After reducing the fraction, the answer is -19/4
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