Subtract 10/40 from 90/30
1st number: 3 0/30, 2nd number: 10/40
90/30 - 10/40 is 11/4.
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,
90/30 = 90 × 4/30 × 4 = 360/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
10/40 = 10 × 3/40 × 3 = 30/120 - Subtract the two like fractions:
360/120 - 30/120 = 360 - 30/120 = 330/120 - After reducing the fraction, the answer is 11/4
- In mixed form: 23/4
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