Subtract 21/45 from 36/30
1st number: 1 6/30, 2nd number: 21/45
36/30 - 21/45 is 11/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
36/30 = 36 × 3/30 × 3 = 108/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Subtract the two like fractions:
108/90 - 42/90 = 108 - 42/90 = 66/90 - After reducing the fraction, the answer is 11/15
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