Subtract 42/24 from 30/90
1st number: 30/90, 2nd number: 1 18/24
30/90 - 42/24 is -17/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 24 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
30/90 = 30 × 4/90 × 4 = 120/360 - Likewise, for the 2nd fraction, since 24 × 15 = 360,
42/24 = 42 × 15/24 × 15 = 630/360 - Subtract the two like fractions:
120/360 - 630/360 = 120 - 630/360 = -510/360 - After reducing the fraction, the answer is -17/12
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