Subtract 50/18 from 21/30
1st number: 21/30, 2nd number: 2 14/18
21/30 - 50/18 is -187/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
21/30 = 21 × 3/30 × 3 = 63/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
50/18 = 50 × 5/18 × 5 = 250/90 - Subtract the two like fractions:
63/90 - 250/90 = 63 - 250/90 = -187/90
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