Subtract 90/40 from 70/30
1st number: 2 10/30, 2nd number: 2 10/40
70/30 - 90/40 is 1/12.
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,
70/30 = 70 × 4/30 × 4 = 280/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
90/40 = 90 × 3/40 × 3 = 270/120 - Subtract the two like fractions:
280/120 - 270/120 = 280 - 270/120 = 10/120 - After reducing the fraction, the answer is 1/12
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