Subtract 90/40 from 25/30
1st number: 25/30, 2nd number: 2 10/40
25/30 - 90/40 is -17/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
25/30 = 25 × 4/30 × 4 = 100/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
90/40 = 90 × 3/40 × 3 = 270/120 - Subtract the two like fractions:
100/120 - 270/120 = 100 - 270/120 = -170/120 - After reducing the fraction, the answer is -17/12
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